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:
Black Oaks, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA

mindat Locality ID: 228941
mindat URL: http://www.mindat.org/loc-228941.html

Tectonic Settings:

Total number of sublocalities beneath "Black Oaks, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA": 15
Total number of bottom-level sublocalities: 14

Number of Child Localities: 14
Child Localities:
Black Oak Mine (E. H. Hacsela Mine)
Buckeye Mine (Mount Vernon Mine)
Cloverdale Mine
Cornucopia Mine (Healdsburg Mine; Squaw Creek Mine)
Dewey's Mine (Big Red Mine; Dewey Mine; Eagle Rock Mine)
Kissack Mine (Squaw Mine; Amazon Mine; Big Chief Mine)
Red Hill Claim (Juniper Ridge; Lock; Lock And Key; Culver Bear)
Sulphur Creek
Truitt No. 1 Mine
Unnamed Cr Occurrence (1)
Unnamed Hg Occurrence (2)
Unnamed Hg Occurrence (6)
Unnamed Mn Occurrence (2)
Unnamed Mn Occurrence (3)

Latitude: 38°49'0"N
Longitude: 122°51'6"W
Decimal Degree (lat, lon): 38.816666666667,-122.85166666667

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	Chalcopyrite	None	Not in a structural group	Quartz	Spinel

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: C Ca Cr Cu Fe H Hg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Chalcopyrite None Not in a structural group Quartz Spinel

8 IMA Minerals at location:

Azurite ()*	Calcite ()*	Chalcopyrite ()*	Chromite ()*	Cinnabar ()*
Mercury ()*	Montroydite ()*	Quartz ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	180389	5509
Calcite ()*	Calcite	Ca(CO₃)	1	180389	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	180389	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	1	180392	3902
Cinnabar ()*	None	HgS	8	180386,180387,180388,180390,180391,180392,180394,180395	2600
Mercury ()*	None	Hg	4	180387,180388,180390,180394	397
Montroydite ()*	None	HgO	1	180394	29
Quartz ()*	Quartz	SiO₂	2	180389,180394	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...