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:
McCombe Pegmatites, Root Lake Area, Root Lake Pegmatite Group, Kenora District, Ontario, Canada

Oldest recorded age at locality: 2799
Youngest recorded age at locality: 2550

mindat Locality ID: 228549
mindat URL: http://www.mindat.org/loc-228549.html

Tectonic Settings:

Total number of sublocalities beneath "McCombe Pegmatites, Root Lake Area, Root Lake Pegmatite Group, Kenora District, Ontario, Canada": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°56'9"N
Longitude: 91°42'38"W
Decimal Degree (lat, lon): 50.935833333333,-91.710555555556

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	Apatite	Beryl	Calcite	Clinozoisite	Columbite	Epidote	Garnet	Mica	Milarite
None	Not in a structural group	Pyroxene	Titanite	Tourmaline

Almandine ()*	Armenite ()*	Beryl ()*	Calcite ()*	Columbite-(Mn) ()*
Elbaite ()*	Epidote ()*	Fluor-elbaite ()*	Fluor-liddicoatite ()*	Fluorapatite ()*
Foitite ()*	Holmquistite ()*	Petalite ()*	Schorl ()*	Siderophyllite ()*
Spessartine ()*	Spodumene ()*	Tantalite-(Mn) ()*	Titanite ()*

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 B Ba Be C Ca F Fe H K Li Mg Mn Na Nb O P Si Ta Ti

Elements from minerals reported directly at this locality: Al B Ba Be C Ca F Fe H K Li Mg Mn Na Nb O P Si Ta Ti

Structural Groups for minerals in this locality:
Amphibole Apatite Beryl Calcite Clinozoisite Columbite Epidote Garnet Mica Milarite
None Not in a structural group Pyroxene Titanite Tourmaline

19 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃	2799	2550	2353
Armenite ()*	Milarite	BaCa₂(Al₆Si₉)O₃₀·2H₂O	2799	2550	23
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	2799	2550	4286
Calcite ()*	Calcite	Ca(CO₃)	2799	2550	27770
Columbite-(Mn) ()*	Columbite	Mn²⁺Nb₂O₆	2799	2550	289
Elbaite ()*	Tourmaline	Na(Al_1.5Li_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	2799	2550	520
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	2799	2550	8173
Fluor-elbaite ()*	Tourmaline	Na(Li_1.5Al_1.5)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	2799	2550	31
Fluor-liddicoatite ()*	Tourmaline	Ca(Li₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃F	2799	2550	12
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	2799	2550	2740
Foitite ()*	Tourmaline	(Fe²⁺₂Al)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	2799	2550	75
Holmquistite ()*	Amphibole	Li₂(Mg₃Al₂)Si₈O₂₂(OH)₂	2799	2550	42
Petalite ()*	Not in a structural group	LiAlSi₄O₁₀	2799	2550	124
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	2799	2550	2705
Siderophyllite ()*	Mica	KFe²⁺₂Al(Si₂Al₂)O₁₀(OH)₂	2799	2550	92
Spessartine ()*	Garnet	Mn²⁺₃Al₂(SiO₄)₃	2799	2550	1214
Spodumene ()*	Pyroxene	LiAlSi₂O₆	2799	2550	688
Tantalite-(Mn) ()*	Columbite	Mn²⁺Ta₂O₆	2799	2550	211
Titanite ()*	Titanite	CaTi(SiO₄)O	2799	2550	4899

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Alexandra-0296	2799	2550	2799-2550		Age of pegmatite					Yes				228550	Root Lake Pegmatite Group, Kenora District, Ontario, Canada	Superior Province	Černý (1990)	10.1007/BF01830621	GR79_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...