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:
Igo (South Fork), South Fork Silver District, West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA

mindat Locality ID: 92938
mindat URL: http://www.mindat.org/loc-92938.html

Tectonic Settings:

Total number of sublocalities beneath "Igo (South Fork), South Fork Silver District, West Shasta Copper - Zinc District, Klamath Mts, Shasta Co., California, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Hardscrabble Mine
Igo Placer Mine
Leslie Jones Prospect
Lost Channel Placer Mine
Potosi Mine (Spring Gulch Mining Company; Muletown Consolidated Mine)
Silverfalls - Chicago Consolidated Mine (Chicago Claim; Silver Falls Mine; Chicago Consolidated Property; Pillchunck Claim; Union Claim; Cold Spring Claim; Richmond Claim; Madison Claim)
Unnamed Placer Au Occurrence (25)

Latitude: 40°30'5"N
Longitude: 122°32'33"W
Decimal Degree (lat, lon): 40.501388888889,-122.5425

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.

Apatite	Aragonite	Calcite	Copper	None	Pyrite	Quartz	Rocksalt	Sphalerite	Tetrahedrite

Calcite ()*	Cerussite ()*	Freibergite ()*	Galena ()*	Gold ()*
Proustite ()*	Pyrargyrite ()*	Pyrite ()*	Pyromorphite ()*	Quartz ()*
Sphalerite ()*	Stephanite ()*	Tetrahedrite-(Zn) ()*

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: Ag As Au C Ca Cl Cu Fe O P Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag C Ca O S Sb

Structural Groups for minerals in this locality:
Apatite Aragonite Calcite Copper None Pyrite Quartz Rocksalt Sphalerite Tetrahedrite

13 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	0		27770
Cerussite ()*	Aragonite	Pb(CO₃)	1	177074	4979
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	1	177074	663
Galena ()*	Rocksalt	PbS	2	177071,177074	24243
Gold ()*	Copper	Au	5	177070,177071,177072,177073,177074	30554
Proustite ()*	None	Ag₃AsS₃	1	177074	733
Pyrargyrite ()*	None	Ag₃SbS₃	0		1425
Pyrite ()*	Pyrite	FeS₂	1	177074	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	1	177074	1725
Quartz ()*	Quartz	SiO₂	1	177073	61156
Sphalerite ()*	Sphalerite	ZnS	1	177071	21482
Stephanite ()*	None	Ag₅SbS₄	0		586
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	177074	5317

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...