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:
Diablo Range, Contra Costa Co., California, USA

Oldest recorded age at locality: 5.3
Youngest recorded age at locality: 0

mindat Locality ID: 215367
mindat URL: http://www.mindat.org/loc-215367.html

Tectonic Settings:

Total number of sublocalities beneath "Diablo Range, Contra Costa Co., California, USA": 44
Total number of bottom-level sublocalities: 36

Number of Child Localities: 5
Child Localities:
Clayton
Diablo
Los Vaqueros Reservoir
Marsh Creek Springs
Moraga

Latitude: 37°51'49"N
Longitude: 121°55'12"W
Decimal Degree (lat, lon): 37.863611111111,-121.92

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.

Allophane	Amphibole	Baryte	Calcite	Chalcanthite	Chalcopyrite	Clay	Copiapite	Copper	Coquimbite
Cristobalite	Epsomite	Fluorite	Halotrichite	Marcasite	Melanterite	Mica	Millerite	None	Not in a structural group
Pyrite	Pyrochlore	Pyroxene	Quartz	Römerite	Serpentine	Sphalerite	Spinel	Stibnite	Voltaite

Alunogen ()*	Baryte ()*	Bornite ()*	Calcite ()*	Chalcopyrite ()*
Chromite ()*	Chrysocolla ()*	Chrysotile ()*	Cinnabar ()*	Copiapite ()*
Coquimbite ()*	Cristobalite ()*	Diopside ()*	Enstatite ()*	Epsomite ()*
Fluorite ()*	Glaucophane ()*	Gold ()*	Halotrichite ()*	Hypercinnabar ()*
Kornelite ()*	Marcasite ()*	Melanterite ()*	Metacinnabar ()*	Millerite ()*
Morenosite ()*	Muscovite ()*	Pyrite ()*	Quartz ()*	Römerite ()*
Schuetteite ()*	Siderotil ()*	Stibiconite ()*	Stibnite ()*	Valentinite ()*
Voltaite ()*

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 Au Ba C Ca Cr Cu F Fe H Hg K Mg Na Ni O S Sb Si

Elements from minerals reported directly at this locality: Mg O Si

Structural Groups for minerals in this locality:
Allophane Amphibole Baryte Calcite Chalcanthite Chalcopyrite Clay Copiapite Copper Coquimbite
Cristobalite Epsomite Fluorite Halotrichite Marcasite Melanterite Mica Millerite None Not in a structural group
Pyrite Pyrochlore Pyroxene Quartz Römerite Serpentine Sphalerite Spinel Stibnite Voltaite

36 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Alunogen ()*	Not in a structural group	Al₂(SO₄)₃(H₂O)₁₂·5H₂O	5.3	1	153655	272
Baryte ()*	Baryte	Ba(SO₄)	5.3	1	153652	11547
Bornite ()*	None	Cu₅FeS₄	5.3	1	153647	5516
Calcite ()*	Calcite	Ca(CO₃)	5.3	2	153655,153659	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	5.3	4	153645,153647,153650,153654	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	5.3	2	153648,153665	3902
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	5.3	1	153644	3531
Chrysotile ()*	Serpentine Clay	Mg₃Si₂O₅(OH)₄	5.3	2	153639,153658	951
Cinnabar ()*	None	HgS	5.3	2	153655,153659	2600
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O	5.3	1	153655	382
Coquimbite ()*	Coquimbite	AlFe₃(SO₄)₆(H₂O)₁₂·6H₂O	5.3	1	153655	136
Cristobalite ()*	Cristobalite	SiO₂	5.3	1	153655	453
Diopside ()*	Pyroxene	CaMgSi₂O₆	5.3	1	153653	4135
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	5.3	0		944
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	5.3	1	153655	484
Fluorite ()*	Fluorite	CaF₂	5.3	1	153652	9617
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	5.3	1	153668	286
Gold ()*	Copper	Au	5.3	1	153647	30554
Halotrichite ()*	Halotrichite	Fe²⁺Al₂(SO₄)₄·22H₂O	5.3	1	153655	409
Hypercinnabar ()*	None	HgS	5.3	1	153655	4
Kornelite ()*	Not in a structural group	Fe³⁺₂(SO₄)₃·7H₂O (?)	5.3	1	153655	21
Marcasite ()*	Marcasite	FeS₂	5.3	1	153655	5674
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	5.3	1	153655	915
Metacinnabar ()*	Sphalerite	HgS	5.3	2	153655,153659	255
Millerite ()*	Millerite	NiS	5.3	1	153655	1066
Morenosite ()*	Epsomite	Ni(SO₄)·7H₂O	5.3	1	153655	84
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	5.3	1	153655	17380
Pyrite ()*	Pyrite	FeS₂	5.3	3	153645,153655,153659	39462
Quartz ()*	Quartz	SiO₂	5.3	2	153645,153650	61156
Römerite ()*	Römerite	Fe²⁺Fe³⁺₂(SO₄)₄·14H₂O	5.3	1	153655	115
Schuetteite ()*	None	Hg₃O₂(SO₄)	0	1	153655	21
Siderotil ()*	Chalcanthite	Fe(SO₄)·5H₂O	5.3	1	153655	84
Stibiconite ()*	Pyrochlore	Sb³⁺Sb⁵⁺₂O₆(OH)	5.3	1	153655	446
Stibnite ()*	Stibnite	Sb₂S₃	5.3	1	153655	3418
Valentinite ()*	None	Sb₂O₃	5.3	1	153655	369
Voltaite ()*	Voltaite	K₂Fe²⁺₅Fe³⁺₃Al(SO₄)₁₂·18H₂O	5.3	1	153655	111

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Hg-00032	5.3	0		?-?						Yes		Cinnabar, Hypercinnabar, Metacinnabar, Schuetteite	Hg	3448	Contra Costa Co., California, USA	California Mercury Occurrences	Studemeister (1984)	10.1007/BF00199786	MD19_202

Sample	Source Locality	Reference URL
R110059	Mount Diablo (Mt Diablo), Clayton, Diablo Range, Contra Costa Co., California, USA	https://rruff.info/R110059

All locality data graciously provided by mindat.org

All age data...