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:
Santa Clara Co., California, USA

Oldest recorded age at locality: 168
Youngest recorded age at locality: 161

mindat Locality ID: 3568
mindat URL: http://www.mindat.org/loc-3568.html

Tectonic Settings:

Total number of sublocalities beneath "Santa Clara Co., California, USA": 295
Total number of bottom-level sublocalities: 236

Number of Child Localities: 17
Child Localities:
Coyote Canyon Area
Cupertino
Diablo Range
Fruitdale
Gilroy
Los Altos
Los Altos Hills
Milpitas
Monta Vista
Morgan Hill
New Guadalupe Mine
San Jose
San Martin
Santa Clara
Santa Cruz Mts
Stanford
Washington Mine

Latitude: 37°16'4"N
Longitude: 121°53'8"W
Decimal Degree (lat, lon): 37.267777777778,-121.88555555556

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	Alumohydrocalcite	Alunite	Amorphous	Amphibole	Analcime	Apatite	Aragonite	Arsenopyrite	Atacamite
Baryte	Braunite	Brucite	Calcite	Chalcopyrite	Chlorite	Clay	Clinozoisite	Copper	Corrensite
Cristobalite	Diaspore	Epidote	Epsomite	Feldspar	Fluorite	Garnet	Gyrolite	Harmotome	Humite
Lawsonite	Malachite	Marcasite	Mica	Millerite	Mordenite	Natrolite	Nickeline	None	Not in a structural group
Pyrite	Pyroxene	Quartz	Rhodonite	Rocksalt	Rutile	Serpentine	Smectite-vermiculite	Sphalerite	Spinel
Stibnite	Stilpnomelane	Titanite	Welinite

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 As Au B Ba Be C Ca Cl Cr Cu F Fe H Hg K Li Mg Mn Na Ni O P Pb S Sb Se Si Sn Ti V Zn

Elements from minerals reported directly at this locality: O Sb

Structural Groups for minerals in this locality:
Allophane Alumohydrocalcite Alunite Amorphous Amphibole Analcime Apatite Aragonite Arsenopyrite Atacamite
Baryte Braunite Brucite Calcite Chalcopyrite Chlorite Clay Clinozoisite Copper Corrensite
Cristobalite Diaspore Epidote Epsomite Feldspar Fluorite Garnet Gyrolite Harmotome Humite
Lawsonite Malachite Marcasite Mica Millerite Mordenite Natrolite Nickeline None Not in a structural group
Pyrite Pyroxene Quartz Rhodonite Rocksalt Rutile Serpentine Smectite-vermiculite Sphalerite Spinel
Stibnite Stilpnomelane Titanite Welinite

86 IMA Minerals at location:

Aegirine ()*	Alabandite ()*	Albite ()*	Alleghanyite ()*	Almandine ()*
Alumohydrocalcite ()*	Amesite ()*	Analcime ()*	Aragonite ()*	Arsenopyrite ()*
Azurite ()*	Baryte ()*	Bavenite ()*	Bementite ()*	Berthierine ()*
Bornite ()*	Braunite ()*	Calcite ()*	Cassiterite ()*	Chalcopyrite ()*
Chromite ()*	Chrysocolla ()*	Cinnabar ()*	Clinochlore ()*	Clinozoisite ()*
Copper ()*	Corrensite ()*	Cristobalite ()*	Cymrite ()*	Dolomite ()*
Epsomite ()*	Fluorapatite ()*	Fluorite ()*	Franciscanite ()*	Gageite ()*
Galena ()*	Ganophyllite ()*	Glaucophane ()*	Goethite ()*	Gold ()*
Gyrolite ()*	Harmotome ()*	Hausmannite ()*	Howieite ()*	Hydromagnesite ()*
Jadeite ()*	Jarosite ()*	Kempite ()*	Kutnohorite ()*	Laumontite ()*
Lawsonite ()*	Lithiophorite ()*	Magnesite ()*	Malachite ()*	Marcasite ()*
Margarite ()*	Melanophlogite ()*	Mercury ()*	Metacinnabar ()*	Millerite ()*
Mordenite ()*	Muscovite ()*	Natrolite ()*	Opal ()*	Pyrite ()*
Pyrochroite ()*	Pyrolusite ()*	Pyrrhotite ()*	Quartz ()*	Rhodochrosite ()*
Rhodonite ()*	Riebeckite ()*	Rutile ()*	Santaclaraite ()*	Saponite ()*
Siderite ()*	Sonolite ()*	Sphalerite ()*	Stibnite ()*	Stilpnomelane ()*
Tiemannite ()*	Titanite ()*	Ulexite ()*	Uvarovite ()*	Valentinite ()*
Zaratite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆			1	176037	1022
Alabandite ()*	Rocksalt	MnS			1	176062	312
Albite ()*	Feldspar	Na(AlSi₃O₈)			6	176037,176081,176086,176131,176137,176224	8803
Alleghanyite ()*	Humite	Mn²⁺₅(SiO₄)₂(OH)₂			1	176062	77
Almandine ()*	Garnet	Fe²⁺₃Al₂(SiO₄)₃			3	176113,176133,176187	2353
Alumohydrocalcite ()*	Alumohydrocalcite	CaAl₂(CO₃)₂(OH)₄·4H₂O			1	176080	46
Amesite ()*	Clay Serpentine	Mg₂Al(AlSiO₅)(OH)₄			2	176081,176131	74
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O			1	176184	1627
Aragonite ()*	Aragonite	Ca(CO₃)	168	168	2	176135,176260	3250
Arsenopyrite ()*	Arsenopyrite	FeAsS			1	176278	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			2	176249,176272	5509
Baryte ()*	Baryte	Ba(SO₄)			2	176062,176112	11547
Bavenite ()*	None	Ca₄Be_2+xAl_2-xSi₉O_26-x(OH)_2+x (x = 0 to 1)	168	168	1	176260	255
Bementite ()*	Clay	Mn₇Si₆O₁₅(OH)₈			1	176096	173
Berthierine ()*	Clay Serpentine	(Fe²⁺,Fe³⁺,Al)₃(Si,Al)₂O₅(OH)₄			2	176081,176131	59
Bornite ()*	None	Cu₅FeS₄			3	176246,176261,176272	5516
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)			2	176112,176232	483
Calcite ()*	Calcite	Ca(CO₃)			8	176081,176112,176131,176201,176272,176278,176279,176286	27770
Cassiterite ()*	Rutile	SnO₂			1	176222	5171
Chalcopyrite ()*	Chalcopyrite	CuFeS₂			5	176112,176139,176249,176272,176278	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	168	168	9	176094,176118,176119,176120,176123,176210,176251,176276,176316	3902
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			1	176287	3531
Cinnabar ()*	None	HgS			32	176121,176139,176146,176147,176208,176209,176224,176245,176260,176261,176262,176263,176265,176266,176267,176269,176270,176272,176274,176278,176279,176281,176282,176283,176285,176286,176288,176289,176290,176291,176301,176302	2600
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈			2	176081,176131	1756
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)			2	176091,176224	1025
Copper ()*	Copper	Cu			1	176112	3846
Corrensite ()*	Corrensite Clay	(Ca,Na,K)_1-x(Mg,Fe,Al)₉(Si,Al)₈O₂₀(OH)₁₀·nH₂O			1	176081	49
Cristobalite ()*	Cristobalite	SiO₂			2	176111,176112	453
Cymrite ()*	None	Ba(Si,Al)₄(O,OH)₈·H₂O			1	176136	46
Dolomite ()*	None	CaMg(CO₃)₂			9	176224,176263,176267,176272,176274,176278,176285,176288,176290	9895
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O			1	176278	484
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	176113	2740
Fluorite ()*	Fluorite	CaF₂			1	176294	9617
Franciscanite ()*	Welinite	Mn²⁺₆(V⁵⁺ )(SiO₄)₂O₃(OH)₃			1	176112	3
Gageite ()*	None	Mn²⁺₂₁Si₈O₂₇(OH)₂₀			1	176112	14
Galena ()*	Rocksalt	PbS			2	176272,176278	24243
Ganophyllite ()*	Clay	(K,Na)_xMn²⁺₆(Si,Al)₁₀O₂₄(OH)₄·nH₂O (x = 1-2; n = 7-11)			1	176062	45
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	168	168	14	176037,176046,176081,176113,176115,176131,176133,176135,176148,176185,176189,176224,176227,176260	286
Goethite ()*	Diaspore	FeO(OH)			1	176096	7437
Gold ()*	Copper	Au			1	176187	30554
Gyrolite ()*	Gyrolite	NaCa₁₆(Si₂₃Al)O₆₀(OH)₈·14H₂O			1	176278	142
Harmotome ()*	Harmotome	Ba₂(Si₁₂Al₄)O₃₂·12H₂O			1	176112	290
Hausmannite ()*	Spinel	Mn²⁺Mn³⁺₂O₄			2	176062,176112	350
Howieite ()*	None	Na(Fe²⁺,Fe³⁺,Al,Mg)₁₂(Si₆O₁₇)₂(O,OH)₁₀			2	176112,176134	16
Hydromagnesite ()*	None	Mg₅(CO₃)₄(OH)₂·4H₂O			3	176056,176103,176114	341
Jadeite ()*	Pyroxene	NaAlSi₂O₆			2	176131,176136	154
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆			1	176278	2228
Kempite ()*	Atacamite	Mn²⁺₂Cl(OH)₃			1	176062	3
Kutnohorite ()*	None	CaMn²⁺(CO₃)₂			1	176112	234
Laumontite ()*	Not in a structural group	CaAl₂Si₄O₁₂·4H₂O			2	176064,176308	1271
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O			10	176028,176035,176075,176081,176084,176115,176131,176135,176136,176224	121
Lithiophorite ()*	None	(Al,Li)(Mn⁴⁺,Mn³⁺)O₂(OH)₂			1	176085	210
Magnesite ()*	Calcite	Mg(CO₃)			18	176042,176092,176095,176100,176101,176102,176105,176119,176122,176125,176180,176181,176186,176194,176202,176210,176214,176224	1487
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			2	176249,176272	12537
Marcasite ()*	Marcasite	FeS₂			1	176139	5674
Margarite ()*	Mica Clay	CaAl₂Si₂Al₂O₁₀(OH)₂			1	176133	168
Melanophlogite ()*	None	C₂H₁₇O₅·Si₄₆O₉₂			1	176111	38
Mercury ()*	None	Hg			8	176146,176147,176266,176272,176274,176278,176279,176291	397
Metacinnabar ()*	Sphalerite	HgS			3	176146,176272,176278	255
Millerite ()*	Millerite	NiS			1	176278	1066
Mordenite ()*	Mordenite	(Na₂,Ca,K₂)₄(Al₈Si₄₀)O₉₆·28H₂O			1	176086	405
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			2	176081,176224	17380
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O			1	176191	1236
Opal ()*	Amorphous	SiO₂·nH₂O			5	176086,176119,176224,176272,176278	2994
Pyrite ()*	Pyrite	FeS₂			5	176139,176146,176272,176278,176285	39462
Pyrochroite ()*	Brucite	Mn²⁺(OH)₂			1	176062	56
Pyrolusite ()*	Rutile	MnO₂			3	176049,176070,176322	3106
Pyrrhotite ()*	Nickeline	Fe₇S₈			1	176249	9056
Quartz ()*	Quartz	SiO₂			25	176039,176040,176047,176049,176059,176069,176070,176081,176098,176112,176121,176134,176146,176180,176221,176224,176262,176263,176267,176272,176277,176278,176286,176288,176289	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			7	176040,176045,176062,176088,176096,176112,176130	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)			2	176040,176112	969
Riebeckite ()*	Amphibole	Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂(OH)₂			1	176112	375
Rutile ()*	Rutile	TiO₂			1	176185	5614
Santaclaraite ()*	None	CaMn²⁺₄Si₅O₁₄(OH)₂·H₂O			1	176112	2
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O			1	176081	301
Siderite ()*	Calcite	Fe(CO₃)	161	161	2	176087,176195	6417
Sonolite ()*	Humite	Mn²⁺₉(SiO₄)₄(OH)₂			1	176112	50
Sphalerite ()*	Sphalerite	ZnS			1	176272	21482
Stibnite ()*	Stibnite	Sb₂S₃			6	176135,176154,176260,176261,176272,176278	3418
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	168	168	3	176135,176224,176260	456
Tiemannite ()*	Sphalerite	HgSe			1	176272	83
Titanite ()*	Titanite	CaTi(SiO₄)O			3	176113,176222,176224	4899
Ulexite ()*	None	NaCaB₅O₆(OH)₆·5H₂O			1	176119	160
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃			1	176119	212
Valentinite ()*	None	Sb₂O₃	168	161	0		369
Zaratite ()*	Amorphous	Ni₃(CO₃)(OH)₄·4H₂O	168	168	1	176260	56

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00019	161	161	Middle Jurassic (161.13±0.11, 161.167±0.093 Ma, CA-TIMS, zircon in plagiogranite)	Cr	92379	Western Magnesite Company Mine, Red Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	Western Magnesite Company	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00020	161	161	Middle Jurassic (161.13±0.11, 161.167±0.093 Ma, CA-TIMS, zircon in plagiogranite)	Cr	92386	Winship Mine, Red Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	Winship Properties	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00018	168	168	Middle Jurassic (U-Pb, zircon in plagiogranite?)	Cr	92263	Kilday Ranch Deposits, New Almaden, New Almaden District, Santa Cruz Mts, Santa Clara Co., California, USA	Kilday Ranch	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL
R070516	Unnamed Lithiophorite Occurrence [1], Mount Hamilton, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	https://rruff.info/R070516
R060863	Unnamed Lithiophorite Occurrence [1], Mount Hamilton, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	https://rruff.info/R060863
R060056	Pennsylvania Mine, Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	https://rruff.info/R060056
R060346	Pennsylvania Mine, Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA	https://rruff.info/R060346

All locality data graciously provided by mindat.org

All age data...