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:
Mountain Top, French Creek District, Calaveras Co., California, USA

Oldest recorded age at locality: 281
Youngest recorded age at locality: 100

mindat Locality ID: 259479
mindat URL: http://www.mindat.org/loc-259479.html

Tectonic Settings:

Total number of sublocalities beneath "Mountain Top, French Creek District, Calaveras Co., California, USA": 10
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
American Asbestos & Manufacturing Company Mine (American Asbestos Mine; Voorhees)
Bowie Estate Mine (J. W. Bowie Claims)
Dean Mine
Holbrook And McGuire Mine (Low Grade Workings; High Grade Workings; Holbrook And McGuire Group)
Josephine Mine (Old Mountain Top)
Liberty Mine (McFall Mine)
Mayflower Chrome Mine (Burnham And Wilson Mine; Mayflower Property; Mayflower Deposit)
Surf & Cordes Prospect
Unnamed Cr Occurrence [3]
Unnamed Stone Deposits [3]

Latitude: 37°57'22"N
Longitude: 120°33'19"W
Decimal Degree (lat, lon): 37.956111111111,-120.55527777778

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	Calcite	Chalcopyrite	Chlorite	Clay	Copper	Garnet	Malachite	None	Pyrite
Quartz	Spinel	Talc

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 C Ca Cr Cu Fe H Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amorphous Calcite Chalcopyrite Chlorite Clay Copper Garnet Malachite None Pyrite
Quartz Spinel Talc

12 IMA Minerals at location:

Chalcopyrite ()*	Chromite ()*	Clinochlore ()*	Gold ()*	Magnesiochromite ()*
Magnesite ()*	Malachite ()*	Opal ()*	Pyrite ()*	Quartz ()*
Talc ()*	Uvarovite ()*

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
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	100	100	1	152867	27198
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	100	100	1	152871	3902
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	281	281	2	152865,152869	1756
Gold ()*	Copper	Au	100	100	1	152870	30554
Magnesiochromite ()*	Spinel	MgCr₂O₄	281	100	6	152863,152864,152865,152866,152868,152869	311
Magnesite ()*	Calcite	Mg(CO₃)	281	281	3	152864,152865,152866	1487
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	281	281	1	152864	12537
Opal ()*	Amorphous	SiO₂·nH₂O	281	281	1	152865	2994
Pyrite ()*	Pyrite	FeS₂	100	100	1	152867	39462
Quartz ()*	Quartz	SiO₂	100	100	1	152870	61156
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	281	281	2	152864,152869	3337
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	281	100	3	152864,152868,152871	212

7 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age from other Locality	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
Mo-00156	100	100		Yes	Molybdenite	Mo	16293	Calaveras Co., California, USA	Calaveras County	Brock (1972)	10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2	GSAB83_3391
podchrome-00063	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	74942	Bowie Estate Mine (J. W. Bowie Claims), Mountain Top, French Creek District, Calaveras Co., California, USA	Bowie Estate 1	Moiser et al. (2012)		USGSSIR2012_5157
podchrome-00060	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	75114	Dean Mine, Mountain Top, French Creek District, Calaveras Co., California, USA	Dean	Moiser et al. (2012)		USGSSIR2012_5157
podchrome-00061	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	75365	Holbrook And McGuire Mine (Low Grade Workings; High Grade Workings; Holbrook And McGuire Group), Mountain Top, French Creek District, Calaveras Co., California, USA	Holbrook and McGuire Group 3	Moiser et al. (2012)		USGSSIR2012_5157
podchrome-00062	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	75365	Holbrook And McGuire Mine (Low Grade Workings; High Grade Workings; Holbrook And McGuire Group), Mountain Top, French Creek District, Calaveras Co., California, USA	Holbrook and McGuire Group 1	Moiser et al. (2012)		USGSSIR2012_5157
podchrome-00058	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	75491	Liberty Mine (McFall Mine), Mountain Top, French Creek District, Calaveras Co., California, USA	Liberty	Moiser et al. (2012)		USGSSIR2012_5157
podchrome-00059	281	281	Permian (280±3 m.y. 206Pb/238U, 282±3 m.y. 207Pb/235U)			Cr	75583	Mayflower Chrome Mine (Burnham And Wilson Mine; Mayflower Property; Mayflower Deposit), Mountain Top, French Creek District, Calaveras Co., California, USA	Mayflower	Moiser et al. (2012)		USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...