melanochalciten.

Brit.

/ˌmɛlənə(ʊ)ˈkalsʌɪt/, U.S.

/ˌmɛlənoʊˈkælˌsaɪt/,

/ˌmɛlənəˈkælˌsaɪt/

Origin: A borrowing from Greek, combined with English elements. Etymons: melano- comb. form, Greek χαλκός , -ite suffix¹.

Etymology: < melano- comb. form + ancient Greek χαλκός copper (see chalco- comb. form) + -ite suffix¹.

Mineralogy.

An amorphous pitch-black substance now regarded as a mixture of tenorite, chrysocolla, and malachite.

ΚΠ

1902 G. A. Koenig in Amer. Jrnl. Sci. 164 404 I had much reason to distinguish the black mineral as a new mineral species, for which I proposed the name melanochalcite (from μέλας and χαλκός).

1946 Thorpe's Dict. Appl. Chem. (ed. 4) VII. 547/1 The name melaconite..is more properly used for the earthy, probably colloidal form which..grades into melanochalcite.

1967 Compass of Sigma Gamma Epsilon 45 i. 45 The current investigation..has indicated the presence of considerable black, massive, pitchy material fitting the description of the colloidal mineral mixture melanochalcite or ‘copper pitch ore’.

This is a new entry (OED Third Edition, June 2001; most recently modified version published online March 2022).

单词	melanochalcite
释义	melanochalciten. Brit. /ˌmɛlənə(ʊ)ˈkalsʌɪt/, U.S. /ˌmɛlənoʊˈkælˌsaɪt/, /ˌmɛlənəˈkælˌsaɪt/ Origin: A borrowing from Greek, combined with English elements. Etymons: melano- comb. form, Greek χαλκός , -ite suffix¹. Etymology: < melano- comb. form + ancient Greek χαλκός copper (see chalco- comb. form) + -ite suffix¹. Mineralogy. An amorphous pitch-black substance now regarded as a mixture of tenorite, chrysocolla, and malachite. ΚΠ 1902 G. A. Koenig in Amer. Jrnl. Sci. 164 404 I had much reason to distinguish the black mineral as a new mineral species, for which I proposed the name melanochalcite (from μέλας and χαλκός). 1946 Thorpe's Dict. Appl. Chem. (ed. 4) VII. 547/1 The name melaconite..is more properly used for the earthy, probably colloidal form which..grades into melanochalcite. 1967 Compass of Sigma Gamma Epsilon 45 i. 45 The current investigation..has indicated the presence of considerable black, massive, pitchy material fitting the description of the colloidal mineral mixture melanochalcite or ‘copper pitch ore’. This is a new entry (OED Third Edition, June 2001; most recently modified version published online March 2022). < n.1902
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