Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA

Oldest recorded age at locality: 3595.73
Youngest recorded age at locality: 2091.1

mindat Locality ID: 10200
mindat URL: http://www.mindat.org/loc-10200.html

Tectonic Settings:

Total number of sublocalities beneath "Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 44°33'0"N
Longitude: 94°59'"W
Decimal Degree (lat, lon): 44.55,-94.983333333333

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amphibole	Clay	Clinozoisite	Epidote	Mica	None	Quartz	Titanite	Zircon

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ca Fe H K Mg O Si Ti Zr

Elements from minerals reported directly at this locality: Al Ca Fe H K Mg O Si Ti Zr

Structural Groups for minerals in this locality:
Amphibole Clay Clinozoisite Epidote Mica None Quartz Titanite Zircon

6 IMA Minerals at location:

Actinolite ()*	Epidote ()*	Muscovite ()*	Quartz ()*	Titanite ()*
Zircon ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	3595.73	2091.1	3419
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	3595.73	2091.1	8173
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	3595.73	2091.1	17380
Quartz ()*	Quartz	SiO₂	3595.73	2091.1	61156
Titanite ()*	Titanite	CaTi(SiO₄)O	3595.73	2091.1	4899
Zircon ()*	Zircon	Zr(SiO₄)	3251.9	2535	5251

132 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-00787	2496.2	2496.2	2496.2	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00788	2457.04	2457.04	2457.04	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00789	2650.11	2650.11	2650.11	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00790	2496.2	2496.2	2496.2	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00791	2447.25	2447.25	2447.25	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00792	2660.46	2660.46	2660.46	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00793	2496.2	2496.2	2496.2	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00794	2408.09	2408.09	2408.09	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00795	2577.65	2577.65	2577.65	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00820	2985.65	2985.65	2985.65	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00821	2966.07	2966.07	2966.07	Rb-Sr	age of metamorphic crystallization	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00826	2985.65	2985.65	2985.65	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00827	2496.2	2496.2	2496.2	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00828	2639.76	2639.76	2639.76	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00829	2639.76	2639.76	2639.76	Rb-Sr	initial age disturbed by later metamorphism	plagioclase		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00830	2091.1	2091.1	2091.1	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00831	2594.08	2594.08	2594.08	Rb-Sr	minimum age of metamorphic crystallization, initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00832	2594.08	2594.08	2594.08	Rb-Sr	minimum age of metamorphic crystallization, initial age disturbed by later metamorphism	plagioclase		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00833	2536.24	2536.24	2536.24	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00834	3343.7	3343.7	3343.7	Rb-Sr	age of metamorphic crystallization	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00835	2985.65	2985.65	2985.65	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00836	2711.55	2711.55	2711.55	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00853	2985.65	2985.65	2985.65	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00854	3328.26	3328.26	3328.26	Rb-Sr	age of metamorphic crystallization	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00855	2985.65	2985.65	2985.65	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00856	2701.76	2701.76	2701.76	Rb-Sr	initial age disturbed by later metamorphism	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00857	2639.76	2639.76	2639.76	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-00858	2318.85	2318.85	2318.85	Rb-Sr	initial age disturbed by later metamorphism	k-feldspar		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01349	2635.54	2395.54	2515.54±120	Rb-Sr	age of later metamorphism	biotite		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01457	3595.73	3295.73	3445.73±150	Rb-Sr	age of metamorphic crystallization	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01458	3595.73	3295.73	3445.73±150	Rb-Sr	age of metamorphic crystallization	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04520	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04521	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04522	3121.02	2821.02	2971.02±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04523	3148.56	2648.56	2898.56±250	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04524	3101.1	2551.1	2826.1±275	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04525	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04526	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04527	3121.02	2821.02	2971.02±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04528	3148.56	2648.56	2898.56±250	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04529	3101.1	2551.1	2826.1±275	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04530	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04531	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04532	3121.02	2821.02	2971.02±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04533	3148.56	2648.56	2898.56±250	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04534	3101.1	2551.1	2826.1±275	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04535	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04536	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04537	3121.02	2821.02	2971.02±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04538	3148.56	2648.56	2898.56±250	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04539	3101.1	2551.1	2826.1±275	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04540	3005	2455	2730±275	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04541	3195	2705	2950±245	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04542	3195	2705	2950±245	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04543	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04544	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04546	3195	2705	2950±245	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04547	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04548	3015	2725	2870±145	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04549	3020	2720	2870±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04550	3025	2775	2900±125	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04552	3020	2720	2870±150	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04553	3050	2550	2800±250	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04563	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04564	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04565	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04566	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04567	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04568	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04569	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04570	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04572	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04573	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04575	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04576	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04577	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04578	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04579	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04580	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04581	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04582	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04583	3585	3365	3475±110	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04584	3245	2595	2920±325	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04602	2655	2655	2655	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04603	2735	2735	2735	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04604	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04605	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04606	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04607	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04608	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04609	2755	2525	2640±115	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04610	2670	2670	267	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04611	2670	2670	267	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04612	2670	2670	267	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04613	2610	2500	2555±55	Rb-Sr	minimum age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04614	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04615	2610	2500	2555±55	Rb-Sr	minimum age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04616	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04633	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04634	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04635	2420	2420	242	Rb-Sr		whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04636	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04637	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04638	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04639	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04640	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-04641	2630	2550	2590±40	Rb-Sr	age of intrusion	whole rock		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-05214	2515.54	2515.54	2515.54	Rb-Sr	minimum age of metamorphic crystallization	biotite		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-U-Th-Pb-00086_206_238	3117.1	3117.1	3117.1	206_238	initial age disturbed by later metamorphism	allanite		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00086_207_206	2497.2	2497.2	2497.2	207_206	initial age disturbed by later metamorphism	allanite		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00086_207_235	2753.7	2753.7	2753.7	207_235	initial age disturbed by later metamorphism	allanite		10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00090_206_238	2561.2	2561.2	2561.2	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00090_207_206	3032	3032	3032	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00090_207_235	2832.7	2832.7	2832.7	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00098_206_238	2675.3	2675.3	2675.3	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00098_207_206	3169.4	3169.4	3169.4	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00098_207_235	2965.9	2965.9	2965.9	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00141_206_238	2675.7	2565.7	2620.7±55	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00141_207_206	3113.7	2993.7	3053.7±60	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00141_207_235	2932.2	2812.2	2872.2±60	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00142_206_238	2854.4	2744.4	2799.4±55	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00142_207_206	3251.9	3121.9	3186.9±65	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00142_207_235	3090.1	2970.1	3030.1±60	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00771_206_238	2550	2550	2550	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00771_207_206	3055	3055	3055	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00771_207_235	2840	2840	2840	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00772_206_238	2565	2565	2565	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00772_207_206	3035	3035	3035	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00772_207_235	2835	2835	2835	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00773_206_238	2535	2535	2535	206_238		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00773_207_206	3025	3025	3025	207_206		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00773_207_235	2815	2815	2815	207_235		zircon	Zircon	10200	Cold Spring Granite Quarry (Rainbow Quarry), Morton, Renville Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...