Extract from MINFILE No 092JNE119:
Name: D'ARCY NEPHRITE
Development status: Quarry Pit
Nephrite is found in small lenses within serpentinite at the contact with andesite. The area is underlain by sediments and volcanics of the Upper Triassic Hurley Formation, Cadwallader Group and Mississippian to Jurassic sediments and volcanics of the Bridge River Complex (Group). The serpentinite may be related to the Permian and older Shulaps Ultramafic Complex.
The widest band is 50 centimetres in a zone trending northwest for 150 metres. The grade is not high; it is termed "semi-nephrite" and contains much shredded tremolite. Fractured chromite grains within the nephrite are partly replaced by chlorite. Clinozoisite is present in the alteration zone and minor amounts of prismatic tremolite and diopside are present.
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