Allard Stock

The Allard Stock is a copper mine located in La Plata county, Colorado at an elevation of 10,220 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Allard Stock
Secondary: Gail
Secondary: North Star
Secondary: Morning Star
Secondary: Bright Star
Secondary: Offset Nos. 1-2
Secondary: Northerner
Secondary: Northwesterner
Secondary: Minnie
Secondary: Protection
Secondary: Flaussie Nos. 1-3
Secondary: Audrey Nos. 1-2
Secondary: Prize
Secondary: Chance Nos. 1-2
Secondary: Unpatented Claims: Copper Hill
Secondary: Jane Nos. 1-4
Secondary: Bill
Secondary: Beverly
Secondary: Herb
Secondary: Jeanie
Secondary: Larry
Secondary: Punkey
Secondary: Skippy
Secondary: Willie
Secondary: Willow Springs
Secondary: Esmerelda
Secondary: Hill Nos. 1-3
Secondary: Jean
Secondary: Ute
Secondary: Ruby Nos. 1-95
Secondary: Shorty Nos. 1-4
Secondary: Pinky Nos. 1-2
Secondary: Madden No. 1
Secondary: Hazel Nos. 1-2
Secondary: Sandra
Secondary: Marge Nos. 1-2

Commodity

Primary: Copper
Tertiary: PGE
Tertiary: Lead
Tertiary: Gold
Tertiary: Silver

Location

State: Colorado
County: La Plata
District: California (La Plata) District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: San Juan N. F.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Harry Rowe
Home Office: Hesperus, Co.
Years: 1968 -

Owner Name: Humble Oil Co.
Home Office: Durango, Co.
Years: 1968 -

Production

Not available

Deposit

Record Type: Deposit
Operation Category: Occurrence
Operation Type: Underground
Mining Method: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Colorado Plateaus
Physiographic Section: Navajo Section

Mineral Deposit Model

Model Name: Porphyry Cu

Orebody

Not available

Structure

Type: L
Structure: La Plata Dome, Syenite Stock

Type: R
Structure: San Juan Uplift, Four Corners Platform

Alterations

Alteration Type: L
Alteration: Oxidation

Rocks

Name: Syenite
Role: Associated
Age Type: Associated Rock
Age Young: Eocene

Analytical Data

Analytical Data: SAMPLE 2 (FROM 200 TO 580 FT), 0.543% CU, 0.23 OZ/TON AG, 0.003 OZ/TON PT
Analytical Data: SAMPLE 3 (FROM 580 TO 740 FT), 0.192% CU, 0.24 OZ/TON AG
Analytical Data: RESULTS OF USBM SAMPLING IN 1943: SAMPLE 1 (FROM PORTAL TO 280 FT), 0.147% CU, 0.14 OZ/TON AG
Analytical Data: SAMPLE 4 (WEST DRIFT ALONG 212 FT), 0.486% CU, 0.22 OZ/TON AG.

Materials

Ore: Galena
Ore: Pyrite
Gangue: Malachite
Gangue: Magnetite
Gangue: Limonite
Gangue: Fluorite
Gangue: Chrysocolla
Gangue: Calcite
Gangue: Augite
Gangue: Quartz

Comments

Comment (Names): ABW changed name from Allard to Allard Stock to better align with Long's Significant Deposits database.

Comment (Deposit): Pyrite And Chalcopyrite Sparsely Disseminated Through Syenite, Which Is Traversed By Numerous, Discontinous Dikes Of Augite And Orthoclase, By Quartz Veins Containing Chalcopyrite And Pyrite, And By Quartz-Flourite Veins Carrying Pyrite And Some Galena. Oxidation Of Sulfides Visible Throughout Area.

Comment (Location): (Land Status And Administrative Area Locations Calculated Using Gis Overlay Analysis For San Juan N. F.). On West Side Of Stream Near Headwaters Of Bedrock Creek, 1.45 Miles Nw Of La Plata Townsite (Unsurveyed Section). ; Info From Land.St :1974

Comment (Workings): One Tunnel Driven Initially S 55 W For 20 Ft, Thence N 35 W For 370 Ft To Face; 100-Ft Sw- And Nw-Branching Tunnel At 255 Ft From Portal.

References

Reference (Deposit): Schwartz, G.M., And Others, 1949, Disseminated Chalcopyrite With Platinum And Palladium, In Eckel, E.B., And Others, Geology And Ore Deposits Of The La Plata District, Colorado: USGS Prof. Paper 219, P. 63-65, 84-85.

Reference (Deposit): Eckel, E.B., 1938, Copper Ores Of The La Plata District, Colorado, And Their Platinum Content: Colorado Sci. Soc. Proc., V.13, No. 12, P. 647-664.

Reference (Deposit): Colorado Div. Mines Inf. Rept.

Reference (Deposit): Ref: Cbm Annual Report 1968, Topo Map

Reference (Deposit): Own/Op: Humble Oil Co. 1968

Reference (Deposit): Bom Openfile Rpt MLA 2-92

Colorado Mining Photos

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