granitonen.
/ˈɡranɪtəʊn/ Mineralogy. ? Obsolete.
(See quot. 1794.)
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the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > mixed or intergrowth feldspars
jade1595
granitone1811
saussurite1811
aventurine feldspar1816
perthite1843
myrmekite1911
aventurine sunstone-
1794 R. Kirwan Elements Mineral. (ed. 2) I. 345 The aggregate of felspar and mica is called Rapakivi..; when the felspar exceeds, it forms a durable stone, called in Italy Granitone.]
1811 J. Pinkerton Petralogy I. 203 Graniton may also be denominated, from the mica assuming the size of plates of talc.
1816 Edinb. Rev. 26 163 Granitone is found in almost every situation where serpentine exists.
This entry has not yet been fully updated (first published 1900; most recently modified version published online December 2020).
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n.1811