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:
Hamburg, Klamath River District, Klamath Mts, Siskiyou Co., California, USA

Oldest recorded age at locality: 200
Youngest recorded age at locality: 145

mindat Locality ID: 215659
mindat URL: http://www.mindat.org/loc-215659.html

Tectonic Settings:

Total number of sublocalities beneath "Hamburg, Klamath River District, Klamath Mts, Siskiyou Co., California, USA": 21
Total number of bottom-level sublocalities: 21

Number of Child Localities: 21
Child Localities:
Andrews And Kettlewood Placer
Andrews And Miner No. 2
Chenoweth Brothers Placer
Deep Channel Placer (Taylor And Maplesden)
Dick Morris Placer (Joe Ramus Placer)
Everill Placer (2)
Fairview Mine (Fairview Chrome Mine; Hamburg Bar)
Fraction Placer Mine
Hamburg Mine
Hammer Placer
Happy Home Placer Mine
Harrigan Mine (Hourigan Mine)
Hoosier Hill Placer
Jahde Placer Mine
Maplesden Hydraulic Mine
McGrey And Maplesden Placer
Northern California Dredge Company
Offield Mine
Ramons Placer Mine
Riverview Mine
Willard & Hickman Placer Mine

Latitude: 41°47'22"N
Longitude: 123°4'5"W
Decimal Degree (lat, lon): 41.789444444444,-123.06805555556

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	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 Mg O

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper None Spinel

2 IMA Minerals at location:

Gold ()*	Magnesiochromite ()*

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
Gold ()*	Copper	Au	167	145	16	179262,179263,179264,179265,179266,179267,179269,179271,179272,179274,179275,179276,179277,179278,179280,179282	30554
Magnesiochromite ()*	Spinel	MgCr₂O₄	200	200	1	179268	311

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Kristen002448	Nevadan Orogeny includes the Kalamath Mountains

2 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
	podchrome-00283	200	200	Triassic-Jurassic (225-180 Ma)										Cr	94237	Fairview Mine (Fairview Chrome Mine; Hamburg Bar), Hamburg, Klamath River District, Klamath Mts, Siskiyou Co., California, USA	Fairview	Moiser et al. (2012)		USGSSIR2012_5157
	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...