| 1. | The grains of sperrylite are surrounded by later veins of pyrite.
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| 2. | He claims that the ore he gave me is sperrylite ( platinum arsenide ).
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| 3. | Sperrylite has a poor cleavage, and its polished surface has a metallic lustre.
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| 4. | Sperrylite is composed of loose aggregate of bright silver cubes, some with octahedral modifications.
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| 5. | Sperrylite has been identified in Finland from sulfide deposits generally associated with layered mafic-ultramafic complexes.
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| 6. | Sperrylite crystals vary considerably in shape and size and are usually enclosed in a variety of host minerals.
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| 7. | The most important occurrence of sperrylite is in the nickel ore deposit of Sudbury Basin in Ontario, Canada.
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| 8. | Sperrylite belongs to the pyrite group of minerals and therefore it shares similar structure and crystal habits with them.
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| 9. | Sperrylite is a tin-white mineral known for its brilliant metallic luster, with a grey to black streak.
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| 10. | Sperrylite is formed by contact metamorphism, as in indicated by the development of triple point annealing contacts with pyrrhotite grains.
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