A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...
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44 THE METALLURGY OF ANTIMONY.<br />
Valentinite.<br />
Composition.— Sb2O8; 0 = 16-7, Sb = 83'3.<br />
Properties.—Orthorhombic; crystals often aggregated in fan-shaped<br />
or stellar groups; also massive. H. = 2'5-3. G. = 5*566. Lustre adamantine.<br />
Colour snow-white, occasionally peach-blossom red and ashgray<br />
to brownish. Streak white. Translucent to subtransparent.<br />
Occurrence.—Eesults from decomposition of antimony ores. Vide<br />
chapter on Geology.<br />
Zinkenite.<br />
Composition.—PbSb2S4 or PbS.Sb2S8.<br />
Properties.—Orthorhombic. H. = 3-3-5. G. = 5'3~5-35. Lustre<br />
metallic. Colour and streak steel-gray.<br />
Other less important antimony minerals are:-.—<br />
Brongniardite, Pb2S5 or PbS. Ag2S.Sb2S3.<br />
Diaphorite, (Pb,Ag2)6Sb4Sn or 5(Pb,Ag2)S.2Sb2S3.<br />
Epiboulangerite, Pb3Sb2S3 or 3PbS.Sb2S3.<br />
Geokronite, Pb6Sb2S8 or 5PbS.Sb2Ss.<br />
Hematostibnite, 8 MnO.Sb2Ofi.<br />
Horsfordite, Cu6Sb.<br />
Kilbrickenite,PbeSb2S9 or 6PbS.Sb2S8.<br />
Manganostibnite, 10MnO.Sb2O6.<br />
Ochroite, Pb4Sb20^, 2PbCl2.<br />
Partzite, hydrated oxide of Sb, mixed with various metallic oxides<br />
Polyargyrite, Ag24Sb2SI6 or 12AgaS.Sb2Ss.<br />
Pyrostilpnite, Ag3SbS3 or 3Ag2S. Sb2S8.<br />
Semseyite, Pb7Sb0S1G or 7PbS.3Sb2S*3.<br />
Steinmannite, antimonial galena.<br />
Stetefeldtite, contains Sba06, S, Ag, Cu, FeO, CuO, H2O.<br />
Stromeyerite, (Ag,Cu2)S or Ag2S.Cu2S.<br />
Stylotypite, 3(Cu2. Ag2,Fe)S. Sb2Sy.<br />
Tennantite, CuaAaoS7 or4Cu2S.AsoS3.<br />
Volgerite, hydrous antimonic acid,<br />
Warrenite, Pb3Sb4Sfl or 3PbS.2SbaS8.<br />
Wolfachite, Ni(As,Sb)S.<br />
BIBLIOGRAPHY ON THE MINEEALOGY OF ANTIMONY.<br />
This list is restricted to a few of the most important treatises on<br />
general mineralogy. For a complete bibliography, the reader may<br />
consult pp. xlv.-lxi. of Descriptive Mineralogy, by J. D. Dana, 6th<br />
edit, 1899.<br />
1. Bauer, Max, Lehrbuch dcr Mineralogie, Stuttgart, 1904.<br />
2. Bauerman, Text-book of Descriptive Mineralogy, London, 1884.
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