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:
Mendenhall Springs, Livermore District (Tesla District), Diablo Range, Alameda Co., California, USA

mindat Locality ID: 211490
mindat URL: http://www.mindat.org/loc-211490.html

Tectonic Settings:

Total number of sublocalities beneath "Mendenhall Springs, Livermore District (Tesla District), Diablo Range, Alameda Co., California, USA": 17
Total number of bottom-level sublocalities: 15

Number of Child Localities: 15
Child Localities:
Alameda Company No. 39 Prospect (Alameda Co. #39)
Arroyo Mocho Road Occurrence (Mines Road ?)
Beraudiere Mine
Black Jack Mine
Camp 9 Deposit (Camp 9 Merchant; Cummings)
Corral Hollow
Dewhirst Mine
Freitas Prospect (Vernon Prospect)
Friggel Prospect
Hayes Ranch Deposit
Jumbo Prospect
Kelly Mine
Nelson Bailey Mine (Nelson Lease; Bailey Mine; Newhall Mine)
Newman Mine
Unspecified Calcite-Feldspar Occurrence [1]

Latitude: 37°35'31"N
Longitude: 121°38'22"W
Decimal Degree (lat, lon): 37.591944444444,-121.63944444444

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.

Amphibole	Calcite	Clay	Feldspar	Gypsum	None	Quartz	Rhodonite	Rutile

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 H Mg Mn Na O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Calcite Clay Feldspar Gypsum None Quartz Rhodonite Rutile

10 IMA Minerals at location:

Albite ()*	Bementite ()*	Calcite ()*	Glaucophane ()*	Gypsum ()*
Magnesite ()*	Pyrolusite ()*	Quartz ()*	Rhodochrosite ()*	Rhodonite ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	150444	8803
Bementite ()*	Clay	Mn₇Si₆O₁₅(OH)₈	1	150442	173
Calcite ()*	Calcite	Ca(CO₃)	2	150433,150444	27770
Glaucophane ()*	Amphibole	Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂	2	150432,150436	286
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	150433	6890
Magnesite ()*	Calcite	Mg(CO₃)	1	150439	1487
Pyrolusite ()*	Rutile	MnO₂	6	150428,150431,150432,150434,150441,150442	3106
Quartz ()*	Quartz	SiO₂	6	150428,150430,150431,150436,150442,150443	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	3	150429,150432,150442	1711
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	2	150428,150434	969

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...