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:
Chrome Ridge District, Josephine Co., Oregon, USA

Oldest recorded age at locality: 163
Youngest recorded age at locality: 163

mindat Locality ID: 207610
mindat URL: http://www.mindat.org/loc-207610.html

Tectonic Settings:

Total number of sublocalities beneath "Chrome Ridge District, Josephine Co., Oregon, USA": 29
Total number of bottom-level sublocalities: 28

Number of Child Localities: 27
Child Localities:
Alta Occurrence (One Of Sordy Group)
Blue Prince Claim
Bowers Chrome
Briggs Creek
Cavyell Horse Creek (Van Gwyn; Red Dog)
Cavyell Horse Mt. (Horse Mountain Chromite)
Chrome Crest Claim (Part Of Sordy Group)
Chrome Flat (Hornet Claim Of Sordy Group)
Chrome Flat Mine
Chrome Prospect (Kerby No. 25)
Chrome Prospect (MRDS - 10032196)
Chrome Ridge Deposits
Chrome Ridge Deposits (Shady Cove 0410330323; Violet 0410330215; Sordy Group; Buster)
F D Q
Gallagher Chrome
Hard-To-Get Claim (Catty Buck)
Lucky L. & R.
Mary Walker Claim
P.D.Q. Claim (Part Of Sordy Group)
Sad Sack (Nigger; Black Princess)
Shady Cove (Black Prince Claims; Sordy Group; Spotted Fawn)
Three L Claim
Unnamed Chromium Prospect (MRDS - 10152932)
Upper Pine Creek Occurrence
Western No. 1 Claim
Western No. 2 Occurrence
Yellow Jacket Claim

Latitude: 42°26'15"N
Longitude: 123°44'10"W
Decimal Degree (lat, lon): 42.4375,-123.73611111111

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.

Clay	Garnet	None	Pyrite	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: Ca Cr Fe H Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Clay Garnet None Pyrite Spinel Talc

4 IMA Minerals at location:

Chromite ()*	Pyrite ()*	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
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	163	163	23	259515,259516,259518,259519,259520,259521,259522,259523,259524,259525,259527,259528,259531,259532,259533,259534,259535,259536,259537,259538,259541,259542,259543	3902
Pyrite ()*	Pyrite	FeS₂			1	259540	39462
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	163	163	3	259516,259537,259541	3337
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃			1	259532	212

10 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00387	163	163	Middle Jurassic (164-162 Ma)	Cr	148033	Chrome Crest Claim (Part Of Sordy Group), Chrome Ridge District, Josephine Co., Oregon, USA	Chrome Crest Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00391	163	163	Middle Jurassic (164-162 Ma)	Cr	148036	Chrome Flat Mine, Chrome Ridge District, Josephine Co., Oregon, USA	Chrome Flat	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00389	163	163	Middle Jurassic (164-162 Ma)	Cr	147863	Buster Occurrence (One Of Sordy Group), Chrome Ridge Deposits, Chrome Ridge District, Josephine Co., Oregon, USA	Buster	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00390	163	163	Middle Jurassic (164-162 Ma)	Cr	153254	Violet Mine (Briggs Creek Sordy; Part Of Sordy Group), Chrome Ridge Deposits, Chrome Ridge District, Josephine Co., Oregon, USA	Violet	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00386	163	163	Middle Jurassic (164-162 Ma)	Cr	150133	Lucky L. & R., Chrome Ridge District, Josephine Co., Oregon, USA	Lucky L&R	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00395	163	163	Middle Jurassic (164-162 Ma)	Cr	150243	Mary Walker Claim, Chrome Ridge District, Josephine Co., Oregon, USA	Mary Walker Claim	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00393	163	163	Middle Jurassic (164-162 Ma)	Cr	151402	Sad Sack (Nigger; Black Princess), Chrome Ridge District, Josephine Co., Oregon, USA	Sad Sack	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00394	163	163	Middle Jurassic (164-162 Ma)	Cr	151402	Sad Sack (Nigger; Black Princess), Chrome Ridge District, Josephine Co., Oregon, USA	Nigger	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00388	163	163	Middle Jurassic (164-162 Ma)	Cr	151496	Shady Cove (Black Prince Claims; Sordy Group; Spotted Fawn), Chrome Ridge District, Josephine Co., Oregon, USA	Shady Cove	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00392	163	163	Middle Jurassic (164-162 Ma)	Cr	153476	Yellow Jacket Claim, Chrome Ridge District, Josephine Co., Oregon, USA	Yellow Jacket Claim	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...