| 11. | It occurs in association with cervantite, valentinite, kermesite, native antimony and stibnite.
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| 12. | Stibnite is grey when fresh, but can turn superficially black due to oxidation in air.
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| 13. | It can also form large prismatic crystals similar to stibnite with which it can be associated.
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| 14. | The antimony-based compound in kohl is stibnite ( Sb 2 S 3 )-blue.
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| 15. | Amounts of realgar, stibnite, cinnabar and pyrite are contained in sediments near active hot springs.
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| 16. | The industrial methods for refining antimony are roasting and reduction with carbon or direct reduction of stibnite with iron.
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| 17. | The " antimony " here was in fact stibnite, antimony-sulfide ( Sb 2 S 3 ).
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| 18. | Stibnite contained such large quantities of antimony that individuals were able to serve their country by working at the site.
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| 19. | From 1941 to 1945 Stibnite mined and milled more tungsten and antimony than any other mine in the United States.
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| 20. | Many antimony ores are sulfides, including stibnite ( ), pyrargyrite ( ), zinkenite, jamesonite, and boulangerite.
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