Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

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:
Woodlands (Erwin Lake), Baldwin Lake District, San Bernardino Mts, San Bernardino Co., California, USA

mindat Locality ID: 217018
mindat URL: http://www.mindat.org/loc-217018.html

Tectonic Settings:

Total number of sublocalities beneath "Woodlands (Erwin Lake), Baldwin Lake District, San Bernardino Mts, San Bernardino Co., California, USA": 13
Total number of bottom-level sublocalities: 13

Number of Child Localities: 13
Child Localities:
Big Bear Prospect
California Zeta Lode Prospect
Erwin Mine
Gold Hill Mine [2]
Green Canyon Quarry (Big Bear Dolomite Group; Magnesia Group; Sugarloaf Rare II Area No. 5186; Snowflake; Graphite No's 1-7 Claim Block)
Pasby-Strong Prospect
Princess Graphite Prospect
Red Canyon Mercury Prospect
Red Jacket Occurrence
St. Francis Graphite Prospect
Sugar Loaf Mountain Prospect
Thumbum Mine (Thum Bum Basin; Thum Bum Claim)
Unnamed Graphite Deposits [X]

Latitude: 34°13'10"N
Longitude: 116°47'23"W
Decimal Degree (lat, lon): 34.219444444444,-116.78972222222

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.

Calcite	Copper	None	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: Au C Ca Hg Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Copper None Quartz

6 IMA Minerals at location:

Cinnabar ()*	Dolomite ()*	Gold ()*	Graphite ()*	Magnesite ()*
Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Cinnabar ()*	None	HgS	1	173377	2600
Dolomite ()*	None	CaMg(CO₃)₂	1	173380	9895
Gold ()*	Copper	Au	1	173372	30554
Graphite ()*	None	C	5	173370,173374,173376,173379,173382	2812
Magnesite ()*	Calcite	Mg(CO₃)	1	173380	1487
Quartz ()*	Quartz	SiO₂	2	173372,173373	61156

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...