sylvaniten.
/ˈsɪlvənʌɪt/ Mineralogy.
1. Native tellurium, with slight admixture of gold, iron, etc. ? Obsolete.
ΘΚΠ
the world > the earth > minerals > types of mineral > native elements and alloys > [noun] > native tellurium
sylvanite1796
the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > krennerite group > specific minerals
sylvanite1796
krennerite1878
1796 R. Kirwan Elements Mineral. (ed. 2) II. 324 I call it [sc. the new semi-metal] Sylvanite, from its being found in Transylvania.
1811 J. Pinkerton Petralogy II. 239 Bornite,..with sylvanite, from Nagyag in Transilvania.
2. A telluride of gold and silver (sometimes also containing lead), occurring in crystals or masses of a steel-grey, silver-white, or yellow colour with metallic lustre.
ΚΠ
1868 J. D. Dana Syst. Mineral. (ed. 5) 81 Sylvanite... Comp... Tellurium 55·8, gold 28·5, silver 15·7. Antimony sometimes replaces part of the tellurium, and lead part of the other metals.
Derivatives
sylvaˈnitic adj. containing sylvanite.
ΘΚΠ
the world > the earth > minerals > mineral sources > [adjective] > yielding a mineral or metal > others
amethystine1670
marcasitical1670
cawky1676
blendy1683
sylvanitic1796
ytter1805
phosphatic1818
pyroxenic1819
hornblendic1823
muriatiferous1823
platiniferous1828
quartziferous1831
hypersthenic1838
schorly1838
uralitic1845
blendous1847
rutilated1849
orthoclase1853
palladiferous1866
peridotic1867
paragonitic1868
vivianitized1870
andesitic1876
tremolitic1880
phosphoriferous1881
kaolinitic1885
saussuritic1885
perthitic1887
strontianiferous1888
radiferous1899
myrmekitic1916
montmorillonitic1939
illitic1949
1796 R. Kirwan Elements Mineral. (ed. 2) II. 101 The Sylvanitic Ore..is..of a whitish colour.
This entry has not yet been fully updated (first published 1919; most recently modified version published online March 2022).
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n.1796