Geologic information
Identification information
| Deposit ID |
10043677 |
| MRDS ID |
M100575 |
| Record type |
Site |
| Current site name |
Long Ledge No. 2 Long Ledge Group |
| Alternate or previous names |
Pearson Property, Riverview Mine
|
Geographic coordinates
|
Geographic coordinates:
|
-119.29235, 36.87384 (WGS84)
|
| Location accuracy |
1000(meters)
|
| Relative position |
Assumed Spot Sect. 19 |
| (click for info) |
Geographic areas
| Country |
State |
County |
| United States |
California |
Fresno |
Public Land Survey System information
| Meridian |
Township |
Range |
Section |
Fraction |
State |
| Mount Diablo |
012S |
024E |
19 |
|
California |
Commodities
| Commodity |
Importance |
| Chromium |
Primary |
Materials information
| Materials |
Type of material |
| Chromite |
Ore |
Host and associated rocks
| Host or associated |
Associated |
| Rock type |
Plutonic Rock
> Granitoid
> Granite |
| Host or associated |
Host |
| Rock type |
Metamorphic Rock
> Serpentinite |
Comments on the geologic information
- THE CHROMITE DEPOSITS OF WATTS VALLEY OCCUR ON THE EASTERN LIMB OF A SYNCLINAL, NE PLUNGING ULTRAMAFIC SILL. THE EASTERN LIMB, KNOWN AS HOG MTN, IS A LITTLE OVER A MILE WIDE, WHILE THE WESTERN LIMB, WHICH FORMS RED MTN, AVERAGES 3 MILES WIDE. THE TWO LIMBS JOIN TO THE NW AND TOGETHER FORM A DISCONTINUOUS TRIANGULAR EXPOSURE OF PERIDOTITE 10 MILES LONG AND 8 MILES WIDE ACROSS THE BASE.
