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:
South Fork Area, Grant Co., Oregon, USA

Oldest recorded age at locality: 280
Youngest recorded age at locality: 15

mindat Locality ID: 213486
mindat URL: http://www.mindat.org/loc-213486.html

Tectonic Settings:

Total number of sublocalities beneath "South Fork Area, Grant Co., Oregon, USA": 13
Total number of bottom-level sublocalities: 13

Number of Child Localities: 13
Child Localities:
Big Chief Claim
Bull Spring Prospects
Chrome No. Two And Three
Eastside
Glasscock Claims (Another Chance; Queen Of The May; Stone & Hankins; Uncle Sam; Eddy Group)
Mack Claims (Red Jacket)
Mascall
Mystery
O. R. Mascall Claims
Oregon Chrome Occurrence
Roba Brothers Occurrence
Shelbv And Hammer (Red Jacket)
Wonder Claim

Latitude: 44°19'25"N
Longitude: 119°24'22"W
Decimal Degree (lat, lon): 44.323611111111,-119.40611111111

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.

None	Quartz	Rutile	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: Cr Fe H Mn O Si

Elements from minerals reported directly at this locality:

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

3 IMA Minerals at location:

Chromite ()*	Manganite ()*	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	280	280	2	258210,258211	3902
Manganite ()*	Rutile	Mn³⁺O(OH)			1	258212	770
Quartz ()*	Quartz	SiO₂			1	258212	61156

22 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-18956	16	15	15+1/-0	18956		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18957	16	15	15+1/-0	18957		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18958	16	15	15+1/-0	18958		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18959	16	15	15+1/-0	18959		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18960	16	15	15+1/-0	18960		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18961	16	15	15+1/-0	18961		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18962	16	15	15+1/-0	18962		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18963	16	15	15+1/-0	18963		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18964	16	15	15+1/-0	18964		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18965	16	15	15+1/-0	18965		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18966	16	15	15+1/-0	18966		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18967	16	15	15+1/-0	18967		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18968	16	15	15+1/-0	18968		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18969	16	15	15+1/-0	18969		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18970	16	15	15+1/-0	18970		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18971	16	15	15+1/-0	18971		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18972	16	15	15+1/-0	18972		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18973	16	15	15+1/-0	18973		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
NAVDAT-18974	16	15	15+1/-0	18974		147545	Big Chief Claim, South Fork Area, Grant Co., Oregon, USA		NAVDAT	NAVDAT
podchrome-00466	280	280	Early Permian (268-278 Ma U-Pb zircon in plagiogranites)		Cr	148973	Glasscock Claims (Another Chance; Queen Of The May; Stone & Hankins; Uncle Sam; Eddy Group), South Fork Area, Grant Co., Oregon, USA	Uncle Sam	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00467	280	280	Early Permian (268-278 Ma U-Pb zircon in plagiogranites)		Cr	148973	Glasscock Claims (Another Chance; Queen Of The May; Stone & Hankins; Uncle Sam; Eddy Group), South Fork Area, Grant Co., Oregon, USA	Queen of the May	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00468	280	280	Early Permian (268-278 Ma U-Pb zircon in plagiogranites)		Cr	148973	Glasscock Claims (Another Chance; Queen Of The May; Stone & Hankins; Uncle Sam; Eddy Group), South Fork Area, Grant Co., Oregon, USA	Stone & Hankins	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...