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:
Redwood Co., Minnesota, USA

Oldest recorded age at locality: 3327.6
Youngest recorded age at locality: 1563.5

mindat Locality ID: 130915
mindat URL: http://www.mindat.org/loc-130915.html

Tectonic Settings:

Total number of sublocalities beneath "Redwood Co., Minnesota, USA": 4
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Delano Granite Future Quarry (Delano Granite Works Inc)
Delhi Prospect
Morton Pit (Ochs Clay-Redwood Pit)
View Quarry

Latitude: 44°37'51"N
Longitude: 95°14'15"W
Decimal Degree (lat, lon): 44.630833333333,-95.2375

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.

Clay	Copper	Feldspar	Kaolinite	Mica	None	Quartz	Smectite-vermiculite

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 Au Ca H K Mg Na O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Clay Copper Feldspar Kaolinite Mica None Quartz Smectite-vermiculite

7 IMA Minerals at location:

Albite ()*	Gibbsite ()*	Gold ()*	Kaolinite ()*	Montmorillonite ()*
Muscovite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)			1	223616	8803
Gibbsite ()*	None	Al(OH)₃	3327.6	1563.5	1	223617	504
Gold ()*	Copper	Au			1	223616	30554
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	3327.6	1563.5	1	223617	5591
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	3327.6	1563.5	1	223617	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	3327.6	1563.5	1	223617	17380
Quartz ()*	Quartz	SiO₂	3327.6	1563.5	2	223616,223617	61156

5 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-U-Th-Pb-00140_206_238	1563.5	1563.5	1563.5	206_238	initial age disturbed by weathering	zircon	Zircon	167266	Morton Pit (Ochs Clay-Redwood Pit), Redwood Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00140_207_206	3327.6	3327.6	3327.6	207_206	initial age disturbed by weathering	zircon	Zircon	167266	Morton Pit (Ochs Clay-Redwood Pit), Redwood Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-U-Th-Pb-00140_207_235	2467.5	2467.5	2467.5	207_235	initial age disturbed by weathering	zircon	Zircon	167266	Morton Pit (Ochs Clay-Redwood Pit), Redwood Co., Minnesota, USA	USGS-U-Th-Pb	USGS-U-Th-Pb
USGS-Rb-Sr-00796	2643.03	2643.03	2643.03	Rb-Sr	age of intrusion	whole rock		167581	View Quarry, Redwood Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-01352	2661.24	2411.24	2536.24±125	Rb-Sr	minimum age of intrusion	biotite		167581	View Quarry, Redwood Co., Minnesota, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...