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:
Guerneville District, Coast Range, Sonoma Co., California, USA

mindat Locality ID: 209722
mindat URL: http://www.mindat.org/loc-209722.html

Tectonic Settings:

Total number of sublocalities beneath "Guerneville District, Coast Range, Sonoma Co., California, USA": 26
Total number of bottom-level sublocalities: 20

Number of Child Localities: 5
Child Localities:
Guerneville
Hacienda
Monte Rio
Rio Dell
Rio Nido

Latitude: 38°30'23"N
Longitude: 122°57'10"W
Decimal Degree (lat, lon): 38.506388888889,-122.95277777778

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.

Amorphous	Amphibole	Baryte	Calcite	Clay	Kaolinite	Lawsonite	Millerite	None	Not in a structural group
Pyrite	Quartz	Sphalerite	Spinel

Ankerite ()*	Azurite ()*	Baryte ()*	Calcite ()*	Chromite ()*
Cinnabar ()*	Dolomite ()*	Glaucophane ()*	Kaolinite ()*	Lawsonite ()*
Magnesiochromite ()*	Magnesite ()*	Magnetite ()*	Mercury ()*	Metacinnabar ()*
Millerite ()*	Opal ()*	Pyrite ()*	Quartz ()*	Vaesite ()*

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 Ba C Ca Cr Cu Fe H Hg Mg Na Ni O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Amphibole Baryte Calcite Clay Kaolinite Lawsonite Millerite None Not in a structural group
Pyrite Quartz Sphalerite Spinel

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	1	180251	3092
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	1	180266	5509
Baryte ()*	Baryte	Ba(SO₄)	1	180251	11547
Calcite ()*	Calcite	Ca(CO₃)	1	180251	27770
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	1	180251	3902
Cinnabar ()*	None	HgS	2	180251,180252	2600
Dolomite ()*	None	CaMg(CO₃)₂	1	180251	9895
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	1	180248	286
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1	180251	5591
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O	1	180248	121
Magnesiochromite ()*	Spinel	MgCr₂O₄	1	180251	311
Magnesite ()*	Calcite	Mg(CO₃)	1	180251	1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	180251	14899
Mercury ()*	None	Hg	3	180250,180258,180259	397
Metacinnabar ()*	Sphalerite	HgS	1	180251	255
Millerite ()*	Millerite	NiS	1	180251	1066
Opal ()*	Amorphous	SiO₂·nH₂O	1	180251	2994
Pyrite ()*	Pyrite	FeS₂	1	180251	39462
Quartz ()*	Quartz	SiO₂	1	180251	61156
Vaesite ()*	Pyrite	NiS₂	1	180251	106

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...