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:
Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada

Oldest recorded age at locality: 2642
Youngest recorded age at locality: 2601

mindat Locality ID: 244373
mindat URL: http://www.mindat.org/loc-244373.html

Tectonic Settings:

Total number of sublocalities beneath "Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°16'12"N
Longitude: 94°35'31"W
Decimal Degree (lat, lon): 50.27,-94.591944444444

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	Beryl	Clay	Feldspar	Mica	None	Not in a structural group	Olivine	Phenakite	Quartz

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 Be H K Li Mg Na O Si

Elements from minerals reported directly at this locality: Al Be H K Li Mg Na O Si

Structural Groups for minerals in this locality:
Amphibole Beryl Clay Feldspar Mica None Not in a structural group Olivine Phenakite Quartz

9 IMA Minerals at location:

Albite ()*	Bikitaite ()*	Chrysoberyl ()*	Cordierite ()*	Eucryptite ()*
Holmquistite ()*	Muscovite ()*	Petalite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	2642	2601	8803
Bikitaite ()*	None	LiAlSi₂O₆·H₂O	2642	2601	4
Chrysoberyl ()*	Olivine	BeAl₂O₄	2642	2601	321
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	2642	2601	1008
Eucryptite ()*	Phenakite	LiAlSiO₄	2642	2642	29
Holmquistite ()*	Amphibole	Li₂(Mg₃Al₂)Si₈O₂₂(OH)₂	2642	2601	42
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	2642	2601	17380
Petalite ()*	Not in a structural group	LiAlSi₄O₁₀	2642	2601	124
Quartz ()*	Quartz	SiO₂	2642	2601	61156

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Alexandra-0198	2605	2601	2603±2	U-Pb	Age of pegmatite	columbite, tantalite	99FWB74		244373	Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada	Big Mack pegmatite	Smith et al. (2004)	10.1007/s00410-003-0538-y	CMP147_549	These data suggest that sample 99FWB74 has undergone multiple fractionation of the U-Pb system, perhaps related to the deformation event, with an overall loss of uranium
Alexandra-0199	2618	2614	2616±2	U-Pb	Age of pegmatite	columbite, tantalite	99FWB74		244373	Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada	Big Mack pegmatite	Smith et al. (2004)	10.1007/s00410-003-0538-y	CMP147_549	These data suggest that sample 99FWB74 has undergone multiple fractionation of the U-Pb system, perhaps related to the deformation event, with an overall loss of uranium
Alexandra-0200	2609	2605	2607±2	U-Pb	Age of pegmatite	columbite, tantalite	99FWB74		244373	Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada	Big Mack pegmatite	Smith et al. (2004)	10.1007/s00410-003-0538-y	CMP147_549	These data suggest that sample 99FWB74 has undergone multiple fractionation of the U-Pb system, perhaps related to the deformation event, with an overall loss of uranium
Grew_Li_2019_0025	2642	2642	2642					Eucryptite	244373	Big Mack Pegmatite, Paterson Lake Area, Kenora District, Ontario, Canada	Big Mack pegmatite, Sepatation Lake Area, Kenora district, Ontario, Canada	Tindle et al. (2002)	10.2113/gscanmin.40.3.753	CM40_753

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...