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:
Indian Hill, Indian Hill District, Sierra Co., California, USA

Oldest recorded age at locality: 272.8
Youngest recorded age at locality: 203

mindat Locality ID: 269536
mindat URL: http://www.mindat.org/loc-269536.html

Tectonic Settings:

Total number of sublocalities beneath "Indian Hill, Indian Hill District, Sierra Co., California, USA": 13
Total number of bottom-level sublocalities: 13

Number of Child Localities: 13
Child Localities:
Arizona Mine
Atom Group
Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings)
Good Enough Placer Mine
Hobby Placer
Indian Hill Placer Mine
Italian Mine
Pacific Gas And Electric Mine (Pacific Gas & Electric Co.; Mary June Placer)
Ralkyard Et Al Placer
Roupe Property (Big Chance; Camptonville Property; Big Chrome)
Russell Hill Drift Mine
Scalan Mine
Walker & Rossi Group

Latitude: 39°30'10"N
Longitude: 120°59'55"W
Decimal Degree (lat, lon): 39.502777777778,-120.99861111111

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.

Copper	None	Quartz	Spinel

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: Au Cr Fe O Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper None Quartz Spinel

3 IMA Minerals at location:

Chromite ()*	Gold ()*	Quartz ()*

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
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	203	203	1	177644	3902
Gold ()*	Copper	Au	272.8	223.2	7	177635,177636,177637,177638,177640,177642,177645	30554
Quartz ()*	Quartz	SiO₂			3	177635,177636,177642	61156

17 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
NAVDAT-87414	272.8	223.2	248±24.8	87414		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87415	272.8	223.2	248±24.8	87415		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87416	272.8	223.2	248±24.8	87416		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87417	272.8	223.2	248±24.8	87417		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87418	272.8	223.2	248±24.8	87418		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87419	272.8	223.2	248±24.8	87419		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87420	272.8	223.2	248±24.8	87420		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87421	272.8	223.2	248±24.8	87421		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87422	272.8	223.2	248±24.8	87422		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87423	272.8	223.2	248±24.8	87423		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87424	272.8	223.2	248±24.8	87424		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87425	272.8	223.2	248±24.8	87425		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87426	272.8	223.2	248±24.8	87426		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87427	272.8	223.2	248±24.8	87427		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87428	272.8	223.2	248±24.8	87428		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
NAVDAT-87429	272.8	223.2	248±24.8	87429		93366	Depot Hill Placer Mine (Joubert; Brosseau; Depot Hill Mine And Mill; Joubert Diggings), Indian Hill, Indian Hill District, Sierra Co., California, USA		NAVDAT	NAVDAT
podchrome-00191	203	203	Lower-Middle Jurassic (203-171 Ma U-Pb zircons from metadiorite and metatonalite)		Cr	93571	Roupe Property (Big Chance; Camptonville Property; Big Chrome), Indian Hill, Indian Hill District, Sierra Co., California, USA	Roupe Property	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...