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:
Browns Flat, Columbia District, East Belt, Tuolumne Co., California, USA

mindat Locality ID: 250183
mindat URL: http://www.mindat.org/loc-250183.html

Tectonic Settings:

Total number of sublocalities beneath "Browns Flat, Columbia District, East Belt, Tuolumne Co., California, USA": 14
Total number of bottom-level sublocalities: 14

Number of Child Localities: 14
Child Localities:
Belmont Claim
Browns Flat Placer Claim
Don Pedro Mine
Lazer Mine (Lazar Mine)
Little Leo Claim
Madrid Claim (Madrid Property)
Mexican And Spring Hill Claim
Protector Claim
Spring Hill And Cowan Placer (Mexican)
Stonewall Mine (Pedro Prospect; Pedro Claim)
Stuart & Morris Mine
Sugarman And Nigger Mine (Sugarman And Negro; Sugarman Claim; Nigger Claim)
Unidentified Au Workings [18]
West Extension Of Austrian Claim

Latitude: 38°0'14"N
Longitude: 120°23'1"W
Decimal Degree (lat, lon): 38.003888888889,-120.38361111111

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.

Copper	Melonite	None	Quartz	Rhodonite	Rutile

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 Au Mn O Si Te

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper Melonite None Quartz Rhodonite Rutile

6 IMA Minerals at location:

Gold ()*	Petzite ()*	Pyrolusite ()*	Quartz ()*	Rhodonite ()*
Sylvanite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Gold ()*	Copper	Au	5	182930,182931,182937,182938,182939	30554
Petzite ()*	None	Ag₃AuTe₂	1	182939	409
Pyrolusite ()*	Rutile	MnO₂	1	182937	3106
Quartz ()*	Quartz	SiO₂	2	182933,182939	61156
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	2	182933,182937	969
Sylvanite ()*	Melonite	AgAuTe₄	1	182939	337

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...