cooperiten.
Mineralogy.
A steel-grey sulphide of platinum, PtS, occurring in irregular grains in conjunction with other minerals in igneous rocks of the Bushveld, South Africa.
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ethiops1697
ethiops mineral1727
sternbergite1826
proustite1835
greenockite1840
dufrenoysite1846
aciculite1849
pyrargyrite1849
schreibersite1849
siegenite1854
troilite1868
valleriite1875
argyrodite1886
semseyite1886
canfieldite1893
sulvanite1900
teallite1904
patronite1906
hydrotroilite1913
violarite1924
cooperite1928
braggite1932
mackinawite1962
roquesite1963
vysotskite1963
mawsonite1965
rhodostannite1968
1928 Jrnl. Chem. Met. & Min. Soc. S. Afr. 28 283 Mr. Wartenweiler..expressed the Society's appreciation that Mr. Cooper had been enabled to give them particulars of this new platinum mineral... As he [sc. Cooper] had been the discoverer of the new mineral, it might be named, for instance, Cooperite.
1932 Discovery Dec. 385/1 The residues insoluble in aqua regia were named cooperite in recognition of Cooper's pioneer work on the minerals of the Transvaal deposits.
1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 258 Cooperite... In the concentrates from the platiniferous norites of the Bushveld complex.
1965 N. de Kun Min. Resources Afr. 427 In the upper 1–2 inches [of the Merensky Reef] the platinoids occur mainly as sulphides and sulpho-arsenides, sperrylite and cooperite.
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).
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n.1928