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:
Allison Ranch Quartz Mine (Allison Ranch Mine; Allison Ranch Vein; Allison Ranch Qtz.; Crossus Consolidated Mine; Stanton Mine), La Barr Meadows, Grass Valley District, Nevada Co., California, USA

mindat Locality ID: 83799
mindat URL: http://www.mindat.org/loc-83799.html

Tectonic Settings:

Total number of sublocalities beneath "Allison Ranch Quartz Mine (Allison Ranch Mine; Allison Ranch Vein; Allison Ranch Qtz.; Crossus Consolidated Mine; Stanton Mine), La Barr Meadows, Grass Valley District, Nevada Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°10'50"N
Longitude: 121°3'39"W
Decimal Degree (lat, lon): 39.180555555556,-121.06083333333

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.

Acanthite	Calcite	Chalcopyrite	Clay	Copper	Mica	None	Pyrite	Quartz	Rocksalt
Sphalerite

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: Ag Al Au C Ca Cu Fe H K O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag Al Au C Ca Cu Fe H K Mg O Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Acanthite Calcite Chalcopyrite Clay Copper Mica None Pyrite Quartz Rocksalt
Sphalerite

12 IMA Minerals at location:

Acanthite ()*	Ankerite ()*	Calcite ()*	Chalcopyrite ()*	Galena ()*
Gold ()*	Muscovite ()*	Pyrargyrite ()*	Pyrite ()*	Quartz ()*
Sphalerite ()*	Stephanite ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S	2793
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	3092
Calcite ()*	Calcite	Ca(CO₃)	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	27198
Galena ()*	Rocksalt	PbS	24243
Gold ()*	Copper	Au	30554
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	17380
Pyrargyrite ()*	None	Ag₃SbS₃	1425
Pyrite ()*	Pyrite	FeS₂	39462
Quartz ()*	Quartz	SiO₂	61156
Sphalerite ()*	Sphalerite	ZnS	21482
Stephanite ()*	None	Ag₅SbS₄	586

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...