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:
Fort Goff, Klamath Mts, Siskiyou Co., California, USA

Oldest recorded age at locality: 167
Youngest recorded age at locality: 145

mindat Locality ID: 231787
mindat URL: http://www.mindat.org/loc-231787.html

Tectonic Settings:

Total number of sublocalities beneath "Fort Goff, Klamath Mts, Siskiyou Co., California, USA": 16
Total number of bottom-level sublocalities: 16

Number of Child Localities: 16
Child Localities:
Abe Lincoln Placer
Bailey Mine
Creed Claim (Reddy Claim No. 3)
Fort Goff Placer (Fort Gough Placer)
Gold Bend Placer Mine
Gold Ventures Ltd. Placer (Portugese Placer)
Masonic Bar Placer Claims
Mississippi Placer
Phillips Occurrence
Portuguese Flat Placer Mine
Shiner Mine
Unidentified Au Placer (125)
Unnamed Placer Au Occurrences (45)
Unnamed Talc Occurrence (2)
Wood And Fehely Placer
Wood Occurrence (Henry Wood)

Latitude: 41°51'30"N
Longitude: 123°15'8"W
Decimal Degree (lat, lon): 41.858333333333,-123.25222222222

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.

Chalcopyrite	Clay	Copper	None	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: Au Cu Fe H Mg O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chalcopyrite Clay Copper None Talc

3 IMA Minerals at location:

Chalcopyrite ()*	Gold ()*	Talc ()*

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	167	145	1	178962	27198
Gold ()*	Copper	Au	167	145	10	178952,178955,178956,178957,178958,178959,178961,178963,178964,178966	30554
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	167	145	1	178965	3337

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Kristen002448	Nevadan Orogeny includes the Kalamath Mountains

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	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	Age Notes
	Kristen002448	167	145	Middle to Early Jurassic							Yes				4064	Josephine Creek Placers, Josephine Creek District, Josephine Co., Oregon, USA	Nevadan Orogeny, Josephine Creek placers	Lanphere et al. (1968)	10.1130/0016-7606(1968)79[1027:IAOTNO]2.0.CO;2	GSAB79_1027

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...