Chlorargyrite var. Bromian & Native Silver Broken Hill...
Chlorargyrite var. Bromian & Native Silver Broken Hill Proprietary Mine, Broken Hill, Broken Hill district, Yancowinna Co., New South Wales, Australia "A fenestrated intergrown flat cluster of chlorargyrite crystals with a little native silver growing up at the top. I got the specimen from the Earl Calvert collection when I sold it for the family many years after Earl Calvert died. It used to be a brighter green. I keep it green side down in a closed box to protect it from reacting with the air as much as possible. This mineral used to be called embolite." - Rock H. Currier Wasn't the air that was/is the problem, it's light. Being a Silver Halide mineral it is the natural equivalent of photographic film - they both share the same chemistry. He was right to keep it in a closed box, just for the wrong reason. If you know your Broken Hill Mine(s) minerals, then you can tell how good this one is - not only is it esthetic (a term not usually applied to Bromian Chlorargyrite specimens), there are also Native Silver crystals as an added highlight. There is a custom labeled acrylic base. Overall Measurements: 2.0 x 2.0 x 0.4 inches (5.0 x 5.0 x 1.0 cm). Offered at no reserve Provenance: Ex. Earl Calvert Collection [RHC #6991, acquired 2000] MinID TCK-E5E [Scale: 1 inch, with mark at 1 cm]
HID09710052018
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Chlorargyrite var. Bromian & Native Silver Broken Hill Proprietary Mine, Broken Hill, Broken Hill district, Yancowinna Co., New South Wales, Australia "A fenestrated intergrown flat cluster of chlorargyrite crystals with a little native silver growing up at the top. I got the specimen from the Earl Calvert collection when I sold it for the family many years after Earl Calvert died. It used to be a brighter green. I keep it green side down in a closed box to protect it from reacting with the air as much as possible. This mineral used to be called embolite." - Rock H. Currier Wasn't the air that was/is the problem, it's light. Being a Silver Halide mineral it is the natural equivalent of photographic film - they both share the same chemistry. He was right to keep it in a closed box, just for the wrong reason. If you know your Broken Hill Mine(s) minerals, then you can tell how good this one is - not only is it esthetic (a term not usually applied to Bromian Chlorargyrite specimens), there are also Native Silver crystals as an added highlight. There is a custom labeled acrylic base. Overall Measurements: 2.0 x 2.0 x 0.4 inches (5.0 x 5.0 x 1.0 cm). Offered at no reserve Provenance: Ex. Earl Calvert Collection [RHC #6991, acquired 2000] MinID TCK-E5E [Scale: 1 inch, with mark at 1 cm]
HID09710052018
© 2019 Heritage Auctions | All Rights Reserved
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Time, Location
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