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:
New England Mills, Colfax District (Illinois District), Placer Co., California, USA

mindat Locality ID: 265995
mindat URL: http://www.mindat.org/loc-265995.html

Tectonic Settings:

Total number of sublocalities beneath "New England Mills, Colfax District (Illinois District), Placer Co., California, USA": 18
Total number of bottom-level sublocalities: 17

Number of Child Localities: 17
Child Localities:
Annie Laurie Mine
Bauer Mine (Big Shady Group)
Bear River Mine (Unnamed Mine)
Big John Mine (Tigar Claim; Buena Vista Claim; Ruby Claim; Blue Bell Claim)
Brushy Creek Mine
Buena Vista Mine
Bugg Prospect (Meyer Property)
Colfax Shale Quarry
Devon Mine
Hinchy Mine
Live Oak Ravine Mine
Major Prospect
Red Bird Consolidated Mine (Red Bird Cons.)
Specimen Gulch Prospects
Unnamed Au Occurrence [52]
Weimar Deposit
Zelma Bell Placer

Latitude: 39°2'42"N
Longitude: 120°56'25"W
Decimal Degree (lat, lon): 39.045,-120.94027777778

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	Pyrite	Quartz	Spinel	Tetrahedrite

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 Cu Fe O S Sb Si

Elements from minerals reported directly at this locality:

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

5 IMA Minerals at location:

Chromite ()*	Gold ()*	Pyrite ()*	Quartz ()*	Tetrahedrite-(Zn) ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	2	166720,166725	3902
Gold ()*	Copper	Au	11	166713,166714,166715,166716,166717,166718,166719,166723,166724,166726,166727	30554
Pyrite ()*	Pyrite	FeS₂	5	166713,166714,166715,166719,166726	39462
Quartz ()*	Quartz	SiO₂	11	166713,166714,166715,166716,166717,166718,166719,166723,166724,166726,166727	61156
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	166715	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...