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:
The Geysers, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA

mindat Locality ID: 3575
mindat URL: http://www.mindat.org/loc-3575.html

Tectonic Settings:

Total number of sublocalities beneath "The Geysers, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA": 16
Total number of bottom-level sublocalities: 14

Number of Child Localities: 13
Child Localities:
Big Geyser Property
Black Bear Mine (Kentuck Mine; Buckman Group)
Commonwealth Consolidated Mine
Devils Pulpit
Geyser Canyon (Geyser Creek Canyon)
Geyser Quarry
Lost Ledge And Mercuryville Divide Mine
Rattlesnake Mine
Unnamed Cr Prospect (9)
Unnamed Hg Prospect (17)
Unnamed Limestone Mine (1)
Unnamed Mn Occurrence (1)
Unnamed S Occurrence (2)

Latitude: 38°45'59"N
Longitude: 122°49'43"W
Decimal Degree (lat, lon): 38.766388888889,-122.82861111111

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.

Alum	Alunite	Amorphous	Analcime	Arcanite	Calcite	Chalcanthite	Clay	Clinozoisite	Epidote
Epsomite	Gadolinite	Gypsum	Halotrichite	Kaolinite	Melanterite	None	Not in a structural group	Pectolite	Picromerite
Prehnite	Pyrite	Sphalerite	Stibnite	Stilbite	Sulphur	Titanite	Voltaite

Alum-(K) ()*	Alunite ()*	Alunogen ()*	Ammonioalunite ()*	Ammoniojarosite ()*
Boussingaultite ()*	Calcite ()*	Cinnabar ()*	Datolite ()*	Epidote ()*
Epsomite ()*	Gypsum ()*	Halotrichite ()*	Kalinite ()*	Kaolinite ()*
Letovicite ()*	Mascagnite ()*	Melanterite ()*	Mercury ()*	Metacinnabar ()*
Metastibnite ()*	Opal ()*	Pectolite ()*	Pentahydrite ()*	Pickeringite ()*
Prehnite ()*	Pyrite ()*	Sassolite ()*	Stellerite ()*	Sulphur ()*
Titanite ()*	Tschermigite ()*	Voltaite ()*	Wairakite ()*

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 B C Ca Fe H Hg K Mg N Na O S Sb Si Ti

Elements from minerals reported directly at this locality: Al B C Ca Fe H K Mg N Na O S Si Ti

Structural Groups for minerals in this locality:
Alum Alunite Amorphous Analcime Arcanite Calcite Chalcanthite Clay Clinozoisite Epidote
Epsomite Gadolinite Gypsum Halotrichite Kaolinite Melanterite None Not in a structural group Pectolite Picromerite
Prehnite Pyrite Sphalerite Stibnite Stilbite Sulphur Titanite Voltaite

34 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Alum-(K) ()*	Alum	KAl(SO₄)₂·12H₂O	0		92
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	0		966
Alunogen ()*	Not in a structural group	Al₂(SO₄)₃(H₂O)₁₂·5H₂O	0		272
Ammonioalunite ()*	Alunite	(NH₄)Al₃(SO₄)₂(OH)₆	0		11
Ammoniojarosite ()*	Alunite	(NH₄)Fe³⁺₃(SO₄)₂(OH)₆	1	180483	30
Boussingaultite ()*	Picromerite	(NH₄)₂Mg(SO₄)₂·6H₂O	1	180485	30
Calcite ()*	Calcite	Ca(CO₃)	0		27770
Cinnabar ()*	None	HgS	2	180481,180489	2600
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	0		498
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	0		8173
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	1	180485	484
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	0		6890
Halotrichite ()*	Halotrichite	Fe²⁺Al₂(SO₄)₄·22H₂O	0		409
Kalinite ()*	None	KAl(SO₄)₂·11H₂O	0		54
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	180483	5591
Letovicite ()*	None	(NH₄)₃H(SO₄)₂	0		18
Mascagnite ()*	Arcanite	(NH₄)₂(SO₄)	1	180485	61
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	0		915
Mercury ()*	None	Hg	1	180490	397
Metacinnabar ()*	Sphalerite	HgS	1	180482	255
Metastibnite ()*	Stibnite	Sb₂S₃	1	180480	87
Opal ()*	Amorphous	SiO₂·nH₂O	0		2994
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)	0		363
Pentahydrite ()*	Chalcanthite	Mg(SO₄)·5H₂O	0		32
Pickeringite ()*	Halotrichite	MgAl₂(SO₄)₄·22H₂O	0		265
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	0		1898
Pyrite ()*	Pyrite	FeS₂	0		39462
Sassolite ()*	None	B(OH)₃	0		31
Stellerite ()*	Stilbite	Ca₄(Si₂₈Al₈)O₇₂·28H₂O	1	180484	189
Sulphur ()*	Sulphur	S	0		2045
Titanite ()*	Titanite	CaTi(SiO₄)O	0		4899
Tschermigite ()*	Alum	(NH₄)Al(SO₄)₂·12H₂O	1	180486	81
Voltaite ()*	Voltaite	K₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂·18H₂O	1	180487	111
Wairakite ()*	Analcime	Ca(Si₄Al₂)O₁₂·2H₂O	0		73

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL
R070597	The Geysers, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA	https://rruff.info/R070597

All locality data graciously provided by mindat.org

All age data...