Clary and Langford

Past Producer in Calaveras county in California, United States with commodities Chromium, Iron

Geologic information

Identification information

Deposit ID	10163140
MRDS ID	M005992
MAS/MILS ID	0060090402
Record type	Site
Current site name	Clary and Langford
Alternate or previous names	Porter and Springs
Related records	10109153

Geographic coordinates

Point of reference	Main Entrance
Geographic coordinates:	-120.64681, 38.04181 (WGS84)
Elevation	530
Location accuracy	10(meters)
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Geographic areas

Country	State	County
United States	California	Calaveras

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
Mount Diablo	002 N	012 E	10	NESWNW	California

Commodities

Commodity	Importance
Chromium	Tertiary
Iron	Tertiary

Materials information

Materials	Type of material
Chromite	Unknown
Olivine	Unknown
Penninite	Unknown
Pyroxene	Unknown
Serpentine	Unknown

Nearby scientific data

Main Entrance (1)	-120.64681, 38.04181	List Map

Ore body information

Strike

N40W

Dip

90N

Thickness

1M

Depth to top

0M

Width

15M

Length

20M

Area

1HA

Field	Value
Type of Orebody #1	DISSEMINATED
Shape of Orebody #1	TABULAR
Shape of Orebody #2	IRREGULAR
Primary mode of Origin	MAGMATIC DIFFER
Primary Ore Control	LITHOLOGY
Degree of Wallrock Alter.	INTENSE
Type of Wallrock Alter. #1	CARBONITIZATION
Strike And Dip	N40W
Minimum Depth to Top	0
Avg. Thick. Unconsol. Mat.	0
Min. Thick. Unconsol. Mat.	0
Total Surface Area (HA)	1
Date of Last Modification	820226

Economic information

Economic information about the deposit and operations

Operation type	Surface-Underground
Development status	Past Producer
Commodity type	Metallic
Significant	No
Discovery year	1900
Year of first production	1900

Mining district

District name	Black Creek Area

Mineral rights holdings

Type of mineral rights	Other

Land status

Ownership category	Private

Ownership information

Type Owner

Owner J. E. Porter And J. H. Spring,Last Operators-1918

Home office California

Year 1976
Type Owner

Owner C. J Tiscornia Ranches Inc.

Interest 100

Home office California

Year 1976

Workings at the site

Type of workings

Surface

Area

1HA

Field	Value
MAS Development Schedule #	1
Mining Record #	1
Mining Method	OPEN PIT
Swell Factor	.6
Avg. Overburden Thickness	0
Primary Material Cover	M-HARD ROCKS
Percentage	100
Hardness of Ore	M-HARD ROCKS

Type of workings

Underground

Length

30M

Overall depth

15M

Field	Value
MAS Development Schedule #	1
Mining Record #	1
Mining Method	OPEN STOPE
Swell Factor	.6
Hardness of Rock	SOFT NONPLASTIC WITH LITTLE WATER
Rock Characteristics	MULTIPLE SYSTEMS OF WEAKNESS PLANES
Rock Support Chars.	UNSUPPORTING NO FLOW
Mine Support Chars.	TIMBER W/LAGGING CONCRETE-UNREINFOR
Number of Shafts	2
Length of Inclines (m)	0
Slope of Inclines	0
Avg. Length of Adits (m)	0
1st Condition of Workings	UNKNOWN

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
U.S. Bureau of Mines	Minerals Availability System	MAS	0060090402
USGS	Mineral Resources Data System	MRDS	M005992	MAS references MRDS

Bibliographic references

Deposit

CAL. DIV MINES GEOL BULL 134 PT 3CHAP 3, P.47, PL.5
Deposit

CAL. STATE MINING BUR BULL 76, . P121 1918
Deposit

CAL. COUNTY REPT NO.2 P.128,PL.D 1962
Deposit

COOP WAR MINERAL INVEST PROJ.,CALAVERAS CO. NO.10 TALIAFERRO

General comments

Subject category	Comment text
Deposit	CATER(1948) STATES THAT ORE WAS 45 PERCENT CR2O3. RESERVES ESTIMATED BY CATER AS PROBABLY NEGLIGIBLE. MINE VISTED 17 SPET 1975 BY CDMG. THE AVERAGE MINABLE GRADE OF CHROMITE IS 45.6 PERCENT & IRON PERCENT. INSUFFICIENT DATA FOR MATRIX CALCULATIONS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 07.00,CR2O3 46.60,FEO 08.31,TOTAL FE 12.87,AL203 12.99,MGO CR/FE 3.19.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	05-NOV-1984	Unknown	U.S. Bureau of Mines