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:
Oat Hill Mines, Aetna Springs, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA

mindat Locality ID: 27905
mindat URL: http://www.mindat.org/loc-27905.html

Tectonic Settings:

Total number of sublocalities beneath "Oat Hill Mines, Aetna Springs, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°40'30"N
Longitude: 122°31'37"W
Decimal Degree (lat, lon): 38.675,-122.52694444444

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.

Clay	Epsomite	Kaolinite	Millerite	None	Pyrite	Sphalerite	Sulphur

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 Cl Fe H Hg Mg Ni O S Si

Elements from minerals reported directly at this locality: Al Cl Fe H Hg Mg Ni O S Si

Structural Groups for minerals in this locality:
Clay Epsomite Kaolinite Millerite None Pyrite Sphalerite Sulphur

9 IMA Minerals at location:

Calomel ()*	Cinnabar ()*	Epsomite ()*	Kaolinite ()*	Mercury ()*
Metacinnabar ()*	Millerite ()*	Pyrite ()*	Sulphur ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Calomel ()*	None	HgCl	91
Cinnabar ()*	None	HgS	2600
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	484
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	5591
Mercury ()*	None	Hg	397
Metacinnabar ()*	Sphalerite	HgS	255
Millerite ()*	Millerite	NiS	1066
Pyrite ()*	Pyrite	FeS₂	39462
Sulphur ()*	Sulphur	S	2045

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...