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:
McLear Pegmatite Quarry (Green Hill), De Kalb Township, St. Lawrence Co., New York, USA

Oldest recorded age at locality: 1202
Youngest recorded age at locality: 1188

mindat Locality ID: 205171
mindat URL: http://www.mindat.org/loc-205171.html

Tectonic Settings:

Total number of sublocalities beneath "McLear Pegmatite Quarry (Green Hill), De Kalb Township, St. Lawrence Co., New York, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 44°27'34"N
Longitude: 75°18'41"W
Decimal Degree (lat, lon): 44.459444444444,-75.311388888889

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	Calcite	Chalcopyrite	Clay	Danburite	Feldspar	Fluorite	Mica	None	Pyrite
Pyroxene	Quartz	Rocksalt	Titanite	Zircon

Albite ()*	Calcite ()*	Chalcopyrite ()*	Danburite ()*	Diopside ()*
Galena ()*	Microcline ()*	Phlogopite ()*	Pyrite ()*	Quartz ()*
Thorite ()*	Titanite ()*	Tremolite ()*	Uraninite ()*	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 B C Ca Cu Fe H K Mg Na O Pb S Si Th Ti U Zr

Elements from minerals reported directly at this locality: Al B C Ca Cu Fe H K Mg Na O Pb S Si Th Ti U Zr

Structural Groups for minerals in this locality:
Amphibole Calcite Chalcopyrite Clay Danburite Feldspar Fluorite Mica None Pyrite
Pyroxene Quartz Rocksalt Titanite Zircon

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1202	1188	8803
Calcite ()*	Calcite	Ca(CO₃)	1202	1188	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1202	1188	27198
Danburite ()*	Danburite	CaB₂Si₂O₈	1202	1188	148
Diopside ()*	Pyroxene	CaMgSi₂O₆	1202	1188	4135
Galena ()*	Rocksalt	PbS	1202	1188	24243
Microcline ()*	Feldspar	K(AlSi₃O₈)	1202	1188	4924
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	1202	1188	2273
Pyrite ()*	Pyrite	FeS₂	1202	1188	39462
Quartz ()*	Quartz	SiO₂	1202	1188	61156
Thorite ()*	Zircon	Th(SiO₄)	1202	1188	1006
Titanite ()*	Titanite	CaTi(SiO₄)O	1202	1188	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	1202	1188	2562
Uraninite ()*	Fluorite	UO₂	1202	1188	2718
Zircon ()*	Zircon	Zr(SiO₄)	1202	1188	5251

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
	Bradley_2012_052	1202	1188	1195±7	U/Pb			zircon				Zircon			205171	McLear Pegmatite Quarry (Green Hill), De Kalb Township, St. Lawrence Co., New York, USA	McLear	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...