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:
Twin Lakes Limestone Deposit, Lower Twin Lake, Twin Lakes, Fresno Co., California, USA

mindat Locality ID: 220101
mindat URL: http://www.mindat.org/loc-220101.html

Tectonic Settings:

Total number of sublocalities beneath "Twin Lakes Limestone Deposit, Lower Twin Lake, Twin Lakes, Fresno Co., California, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 37°17'31"N
Longitude: 119°8'50"W
Decimal Degree (lat, lon): 37.291944444444,-119.14722222222

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	Brucite	Clay	Clinozoisite	Diaspore	Epidote	Feldspar	Garnet	Humite	Ilvaite
Ludwigite	Mica	Nickeline	None	Pertsevite	Pyroxene	Scheelite	Spinel	Titanite	Vesuvianite
Wollastonite

Anorthite ()*	Brucite ()*	Chalcocite ()*	Clinohumite ()*	Clintonite ()*
Diaspore ()*	Diopside ()*	Epidote ()*	Grossular ()*	Hedenbergite ()*
Ilvaite ()*	Ludwigite ()*	Magnetite ()*	Orthoclase ()*	Pargasite ()*
Pertsevite-(F) ()*	Phlogopite ()*	Pyrrhotite ()*	Scheelite ()*	Spinel ()*
Titanite ()*	Tremolite ()*	Vesuvianite ()*	Wightmanite ()*	Wollastonite ()*

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 B Ca Cu F Fe H K Mg Na O S Si Ti W

Elements from minerals reported directly at this locality: Al B Ca Cu F Fe H K Mg Na O S Si Ti W

Structural Groups for minerals in this locality:
Amphibole Brucite Clay Clinozoisite Diaspore Epidote Feldspar Garnet Humite Ilvaite
Ludwigite Mica Nickeline None Pertsevite Pyroxene Scheelite Spinel Titanite Vesuvianite
Wollastonite

25 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	1036
Brucite ()*	Brucite	Mg(OH)₂	462
Chalcocite ()*	None	Cu₂S	5707
Clinohumite ()*	Humite	Mg₉(SiO₄)₄F₂	236
Clintonite ()*	Mica Clay	CaAlMg₂(SiAl₃O₁₀)(OH)₂	86
Diaspore ()*	Diaspore	AlO(OH)	481
Diopside ()*	Pyroxene	CaMgSi₂O₆	4135
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	8173
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	1544
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	741
Ilvaite ()*	Ilvaite	CaFe³⁺Fe²⁺₂O(Si₂O₇)(OH)	197
Ludwigite ()*	Ludwigite	Mg₂Fe³⁺O₂(BO₃)	134
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	14899
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	2349
Pargasite ()*	Amphibole	NaCa₂(Mg₄Al)(Si₆Al₂)O₂₂(OH)₂	313
Pertsevite-(F) ()*	Pertsevite	Mg₂(BO₃)F	8
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	2273
Pyrrhotite ()*	Nickeline	Fe₇S₈	9056
Scheelite ()*	Scheelite	Ca(WO₄)	4894
Spinel ()*	Spinel	MgAl₂O₄	1934
Titanite ()*	Titanite	CaTi(SiO₄)O	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	2562
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	1395
Wightmanite ()*	None	Mg₅O(BO₃)(OH)₅·2H₂O	3
Wollastonite ()*	Wollastonite	CaSiO₃	1247

No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

All age data...