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:
Oak Hill, San Jose, Santa Clara Co., California, USA

mindat Locality ID: 210061
mindat URL: http://www.mindat.org/loc-210061.html

Tectonic Settings:

Total number of sublocalities beneath "Oak Hill, San Jose, Santa Clara Co., California, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Azevado Quarry (Unnamed Quarry)
Hillsdale Mine (Chaboya-Hillsdale Mine; San Juan Bautista Mine; San Juan Mine; San Juan Quicksilver Mine; Sheboya Mine; Chapman Mine; Oak Hill Mine)
Oak Hill Quarry
Unnamed Stone Quarry [8]
Unspecified Glaucophane Occurrence [1]

Latitude: 37°16'10"N
Longitude: 121°51'15"W
Decimal Degree (lat, lon): 37.269444444444,-121.85416666667

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	Calcite	Clay	Clinozoisite	Epidote	Feldspar	Lawsonite	Mica	None
Quartz	Rutile	Stilpnomelane	Titanite

Albite ()*	Cassiterite ()*	Cinnabar ()*	Clinozoisite ()*	Dolomite ()*
Glaucophane ()*	Lawsonite ()*	Magnesite ()*	Muscovite ()*	Opal ()*
Quartz ()*	Stilpnomelane ()*	Titanite ()*

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 C Ca Fe H Hg K Mg Na O S Si Sn Ti

Elements from minerals reported directly at this locality: O Sn

Structural Groups for minerals in this locality:
Amorphous Amphibole Calcite Clay Clinozoisite Epidote Feldspar Lawsonite Mica None
Quartz Rutile Stilpnomelane Titanite

13 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	176224	8803
Cassiterite ()*	Rutile	SnO₂	0		5171
Cinnabar ()*	None	HgS	1	176224	2600
Clinozoisite ()*	Clinozoisite Epidote	Ca₂Al₃[Si₂O₇][SiO₄]O(OH)	1	176224	1025
Dolomite ()*	None	CaMg(CO₃)₂	1	176224	9895
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	2	176224,176227	286
Lawsonite ()*	Lawsonite	CaAl₂(Si₂O₇)(OH)₂·H₂O	1	176224	121
Magnesite ()*	Calcite	Mg(CO₃)	1	176224	1487
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1	176224	17380
Opal ()*	Amorphous	SiO₂·nH₂O	1	176224	2994
Quartz ()*	Quartz	SiO₂	1	176224	61156
Stilpnomelane ()*	Stilpnomelane Clay	(K,Ca,Na)(Fe,Mg,Al)₈(Si,Al)₁₂(O,OH)₃₆·nH₂O	1	176224	456
Titanite ()*	Titanite	CaTi(SiO₄)O	1	176224	4899

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...