polydymiten.

Brit.

/pəˈlɪdᵻmʌɪt/, U.S.

/pəˈlɪdəˌmaɪt/

Origin: A borrowing from Greek, combined with English elements; modelled on a German lexical item. Etymons: poly- comb. form, Greek δίδυμος , -ite suffix¹.

Etymology: < poly- comb. form + ancient Greek -δυμ- (in δίδυμος twin: see didymous adj.) + -ite suffix¹, after German Polydymit (H. Laspeyres 1876, in Jrnl. f. praktische Chemie 14 397).

Mineralogy.

A mineral of the cubic system that is a sulphide of nickel, Ni₃S₄, occurs as grey, metallic masses of polysynthetic twin crystals, and is an endmember of a series with linnaeite.

ΘΚΠ

the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > niccolite group > nickel sulphide

nickel pyrites1837

millerite1854

polydymite1878

vaesite1945

1878 Min. Mag. 2 98 Polydymite..occurs in macled octahedrons.

1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 75 A nickel ore from Sudbury..corresponds to..the general formula of polydymite.

1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 263 Some members of the series, especially polydymite, show polysynthetic twin lamellae.

1999 Canad. Mineralogist 37 545 Siegenite, itself a member of an extensive solid-solution between linnaeite and polydymite.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polydymite
释义	polydymiten. Brit. /pəˈlɪdᵻmʌɪt/, U.S. /pəˈlɪdəˌmaɪt/ Origin: A borrowing from Greek, combined with English elements; modelled on a German lexical item. Etymons: poly- comb. form, Greek δίδυμος , -ite suffix¹. Etymology: < poly- comb. form + ancient Greek -δυμ- (in δίδυμος twin: see didymous adj.) + -ite suffix¹, after German Polydymit (H. Laspeyres 1876, in Jrnl. f. praktische Chemie 14 397). Mineralogy. A mineral of the cubic system that is a sulphide of nickel, Ni₃S₄, occurs as grey, metallic masses of polysynthetic twin crystals, and is an endmember of a series with linnaeite. ΘΚΠ the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > niccolite group > nickel sulphide nickel pyrites1837 millerite1854 polydymite1878 vaesite1945 1878 Min. Mag. 2 98 Polydymite..occurs in macled octahedrons. 1892 E. S. Dana J. D. Dana's Syst. Mineral. (ed. 6) 75 A nickel ore from Sudbury..corresponds to..the general formula of polydymite. 1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 263 Some members of the series, especially polydymite, show polysynthetic twin lamellae. 1999 Canad. Mineralogist 37 545 Siegenite, itself a member of an extensive solid-solution between linnaeite and polydymite. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1878
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