| Locality type: | Prospect |
| Classification |
|---|
| Species: | Chromite |
| Formula: | Fe2+Cr23+O4 |
| Confirmation |
|---|
| Validity: | Believed Valid |
| Data |
|---|
| Mineral Data: | Click here to view Chromite data |
| Locality Data: | Click here to view Bowden prospect, La Barr Meadows, Grass Valley Mining District, Nevada County, California, USA |
| Data Identifiers |
|---|
| Mindat Occurrence Record ID: | 329907 |
| Long-form Identifier: | 1:3:329907:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chromite |
|---|
| 2.4km (1.5 miles) | ⓘDickerson property, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 4.5km (2.8 miles) | ⓘDorsey and Ridge claims, Rough and Ready, Rough-and-Ready Mining District, Nevada County, California, USA |
| 5.9km (3.7 miles) | ⓘDavey prospect, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.3km (3.9 miles) | ⓘBaker prospect (Davey prospect), Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.3km (3.9 miles) | ⓘGrass Valley Extension Cr occurrence, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.6km (4.1 miles) | ⓘAlta Hill Mine (Alta Hill; Alta Hill Chrome Mine), Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.8km (4.2 miles) | ⓘHolseman Mine, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.9km (4.3 miles) | ⓘGolden Gate prospect, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.9km (4.3 miles) | ⓘStandard Mine, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 6.9km (4.3 miles) | ⓘGeach property, Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| References |
|---|
|
| Reference Search (possible matching items) |
|---|
👁 Image
| | Report (issue) | | and A. Lott
I/ Stanford University, Stanford, California 94305
U.S. Geological Survey
Open-file Report...following deposit types are presented; podiform
chromite, porphyry copper, porphyry molybdenum, skarn tungsten...for porphyry copper deposits and for podiform chromite
deposits and may exist but not be recognized for...
Because of the expense involved in drilling,
mining concerns commonly drill enough holes to prove or...or disprove the
economic viability of the mining the deposit. This process can lead to a
tonnage, and | 👁 Image
| Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | Geological
Survey editorial standards.
Menlo Park, California
1984
Contents
Summary
1
Introduction
2...(classification number in
Appendices A and B)
48
Podiform chromite (1.1)
7
Porphyry copper molybdenum-rich; gold-rich...for given deposit types, as labeled
2.
Podiform chromite
6
3.
Porphyry copper, Mo-rich; Au-rich
8
...elements, significant resources of lead, zinc, chromite, manganese, and
possibly cobalt and bauxite may...gold-silver and mercury, platinum-group elements
and chromite in stratiform mafic complexes, sedimentary manganese | 👁 Image
| | Report (issue) | | Colorado-- Federal Center, Bldg. 810
MENLO PARK, California--Bldg. 3, Rm. 3128,345 Middlefield Rd.
•
RESTON...Virginia--National Center, Rm. 1C402, 12201
Sunrise Valley Dr.
SALT LAKE CITY, Utah--Federal Bldg., Rm. 8105...8105,125
South State St.
SAN FRANCISCO, California--Customhouse, Rm. 504,
555 Battery St.
SPOKANE, Washington--U...shown conclusively that the classic Mississippi
Valley-type ores cannot have originated from either
syngenetic...pediform chromite, by John P. Albers
34
Grade and tonnage model of minor pediform chromite, by Donald | 👁 Image
| | Report (issue) | | TABLE OF CONTENTS
Page
Introduction
1
Podiform chromite
3
Porphyry copper molybdenum rich
9
Porphyry...significant.
-2-
MODEL NUMBER
DEPOSIT TYPE Podiform chromite
1.1
AUTHOR D. A. Singer
DATA REFERENCES Singer...others, 1978.
COMMENTS All deposits are from California and Oregon. The two largest
tonnage deposits...(El Dorado Co.)
USCA
Applegate
USOR
Associated Chromite
USOR
Babcock
USOR
Babyfoot
USOR
Beat
USCA
Big...Boiler Pit
USCA
Booker Lease
USCA
Bonanza
USCA
Bowden Prospect
USCA
Bowie Estate
USCA
Bowser
USOR
Bragdor | 👁 Image
| | Report (issue) | | Survey de Canada preceden el
presente esfuerzo con la publicacion de
una superba copilacion de modelos...casos nemos prestado liberalmente
de la publicacion canadiense.
En la industria minera es bien
conocido...ubicados en la parte oriental de Canada y
los de zinc en roca huesped carbonatada,
ubicados en la parte oriental...remueven muchos de
los temas dogmaticos sobre la formacion de
la mineralizacion.
Exfsten muchos
ejemplos,...demuestran
conclusivamente que la mineralizacion del
tipo Mississiippi Valley no se puede haber
originado | 👁 Image
| | Report (issue) | | Alabama,
University, Ala.
Department of :ty.lines, Mining and Geology
State Division of Conservation
Atlanta...Jr ___________________________ _
Relationship of mining to other economic sectors, by
Albert E. Schreck..._
Blue Ridge ________________________________ _
Valley and Ridge ___________________________ _
Appalachian..._________________________________ _
27
28
30
30
Valley and Ridge province,.-_-----------Appalachian Plateaus...96
Piedmont and Blue Ridge provinces ______ _
Valley and Ridge province ______________ _
Appalachian |
|
