All Alone Dome

Porphyry copper prospect in British Columbia, Canada

Names and other identifiers

Alternate names Lorraine
Tract name Intermontane Island-Arc Cu-Au (003pCu2002x)
Group name Lorraine Group
Included sites Group includes Jajay, Misty, and TAM deposits and All Alone Dome and Jeno prospects.
Site status prospect

Geographic location

Country Canada
State or province British Columbia
Geographic location -125.464718137, 55.939205514
Geologic map unit -125.464718137, 55.939205514
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 212Ma
Age determination method K-Ar
Age range 212 Ma, 176 Ma
Age reference unknown
Minerals chalcopyrite, covellite, bornite, magnetite, pyrite
Associated rocks pyroxenite, diorite, monzonite, syenite
Tectonic setting island arc
Stratigraphic age Late Triassic–Early Jurassic

Commodity and development information

Development status Occurrence
Major commodities Cu
Gold-Moly ratio -9999

Reference information

Comments Net veins and migmatite indicate deep levels of emplacement. Grades: 0.13 percent Cu.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009)
Site reference Mihalasky and others (2011, revised 2013)