
Freieslebenite is a sulfosalt mineral composed of antimony, lead, and silver. Sulfosalt minerals are complex sulfide minerals with the formula: AmBnSp. The formula of freieslebenite is AgPbSbS3. Freieslebenite was discovered in approximately 1773 in the Himmelsfurst mines of Freiberg, Saxony, Germany. The mineral was initially called Schilf-Glaser...
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http://en.wikipedia.org/wiki/Freieslebenite

• (n.) A sulphide of antimony, lead, and silver, occuring in monoclinic crystals.
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http://thinkexist.com/dictionary/meaning/freieslebenite/

<alchemy, historical> A sulphide of antimony, lead, and silver, occuring in monoclinic crystals. ... Origin: Named after the German chemist Freiesleben. ... (07 Apr 1998) ...
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http://www.encyclo.co.uk/local/20973
Frei'es·le`ben·ite noun [ Named after the German chemist
Freiesleben .] A sulphide of antimony, lead, and silver, occuring in monoclinic crystals.
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http://www.encyclo.co.uk/webster/F/74
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