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:
Douglas Flat, Vallecito District, Calaveras Co., California, USA

Oldest recorded age at locality: 100
Youngest recorded age at locality: 100

mindat Locality ID: 259845
mindat URL: http://www.mindat.org/loc-259845.html

Tectonic Settings:

Total number of sublocalities beneath "Douglas Flat, Vallecito District, Calaveras Co., California, USA": 28
Total number of bottom-level sublocalities: 27

Number of Child Localities: 27
Child Localities:
Avalanche Placer
Bachelor Occurrence
Bishop Estate Occurrence (Bishop Estate; Vallecito Consolidated Mines)
Central Hill Placer
Dashaway & Missouri Mine (Dashaway And Missouri Mine)
Davies Ranch Placer Mine
Douglas Flat Placers
Forty Nine Placer
Garland Ranch Mine
Gianelli Deposit
Holiday Douglas Flat Gold Mining Company Property
Lost Parrot Mine
Manganese Mine
McCarty Pit
Missouri & Dolly Varden Placer
Mountain Pass (Antone Solari; Solari Botto; Solari And Tanner)
New Century Occurrence (Ed. P. Roberts)
Ohio Buckminster Mine (Uptograph Mine; Ohio Mine)
Red Top Occurrence
Reed And Shannon Dash (Reed & Shannon; Dashaway & Batten Bros.)
Squire Boyd Occurrence
Table Mountain Placer Prospect
Texas & Missouri Mine (Texas And Missouri)
Texas Placer
Tupper Creek Occurrence
Unnamed Mn Prospects [3]
Wild Goose Placer

Latitude: 38°6'40"N
Longitude: 120°26'52"W
Decimal Degree (lat, lon): 38.111111111111,-120.44777777778

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	Corundum	None	Pyrite	Quartz	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 Fe O Pt S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper Corundum None Pyrite Quartz Spinel

6 IMA Minerals at location:

Gold ()*	Hematite ()*	Magnetite ()*	Platinum ()*	Pyrite ()*
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
Gold ()*	Copper	Au	100	100	20	153372,153373,153374,153375,153376,153377,153378,153379,153380,153382,153383,153386,153387,153388,153389,153392,153393,153395,153396,153399	30554
Hematite ()*	Corundum	Fe₂O₃	100	100	1	153378	14640
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	100	100	1	153378	14899
Platinum ()*	Copper	Pt	100	100	1	153378	485
Pyrite ()*	Pyrite	FeS₂	100	100	1	153380	39462
Quartz ()*	Quartz	SiO₂	100	100	3	153376,153383,153395	61156

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
	Mo-00156	100	100								Yes		Molybdenite	Mo	16293	Calaveras Co., California, USA	Calaveras County	Brock (1972)	10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2	GSAB83_3391

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...