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File Created: 29-Jan-2014 by Karl A. Flower (KAF)
Last Edit:  30-Jan-2014 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name MACHTA 2, MACHTA GOLD Mining Division Alberni
BCGS Map 092L005
Status Showing NTS Map 092L03E
Latitude 050º 00' 46'' UTM 09 (NAD 83)
Longitude 127º 08' 24'' Northing 5541709
Easting 633261
Commodities Gold Deposit Types
Tectonic Belt Insular Terrane Wrangell, Plutonic Rocks
Capsule Geology

The Machta 2 occurrence is located south of Matcha Creek, 850 metres east-northeast of the creek mouth and at an elevation of approximately 20 metres.

The region is underlain by flows and pyroclastics of the Lower Jurassic Bonanza Group, which are intruded by granitic rocks of the Late Jurassic Island Plutonic Suite. The contacts between the intrusive phases are mostly transitional. Contacts with the volcanics can be sharp fault contacts or transitional zones, up to 130 metres wide. Post-intrusive aplite and lamprophyre dikes cut both granitic and volcanic rocks. Faults, shear zones, veins and dikes follow three main orientations: 010 to 025 degrees and 150 to 170 degrees, both dipping steeply to the east, and 90 to 135 degrees with shallow southerly dips. Chloritic alteration on fault and shear planes is common.

Locally, massive andesitic to basaltic flows with quartz-epidote-chlorite-pyrite host chalcopyrite and malachite mineralization. In 1985, a rock chip sample (26525) assayed 0.19 gram per tonne gold over 10 metres (Assessment Report 14369).

In 1985, Cal-Denver Resources completed a program of heavy mineral, rock and soil sampling on the area. In 1985 and 1986, Cortez Explorations completed programs of geological mapping, geochemical sampling on the area as the Machta Gold claim. In 1987, Thomson Gold Co. Limited explored the area.

Bibliography
EMPR ASS RPT *14369, 14744, 15079, 15153, 15903
EMPR EXPL 1978-E181; 1980-268; 1986-C152,C217; 1987-C220
EMPR GEM 1974-209
GSC MAP 4-1974; 255A; 1552A
GSC OF 9; 170; 463
GSC P 69-1A; 70-1A; 72-44; 74-8
EMPR PFD 896259

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