anniten.

Brit.

/ˈanʌɪt/, U.S.

/ˈæˌnaɪt/

Origin: From a proper name, combined with an English element. Etymons: proper name Ann , -ite suffix¹.

Etymology: < the name of Cape Ann in Massachusetts, U.S.A., where the mineral was first found + -ite suffix¹.

Mineralogy.

A rare mineral of the biotite group, typically occurring as black or dark brown prisms.Chemical formula: KFe₃AlSi₃O₁₀(OH)_1.5F_0.5. Crystal system: monoclinic.

ΚΠ

1868 J. D. Dana Syst. Mineral. (ed. 5) v. 308 Annite Dana. The lepidomelane of Cape Ann..differs, according to the analyses, in having the O. ratio 1: 2: 3, instead of 1: 3: 4. In optical and other physical characters it is like lepidomelane.

1963 U.S. Geol. Surv. Prof. Paper No. 349-B. 42/1 Biotite is olive green; rock analysis indicates 65 percent annite, and 35 percent phlogopite.

2009 Econ. Geol. 104 1242/2 Two secondary minerals, goethite and kaolinite, form through the alteration of annite.

This entry has been updated (OED Third Edition, March 2022).

单词	annite
释义	anniten. Brit. /ˈanʌɪt/, U.S. /ˈæˌnaɪt/ Origin: From a proper name, combined with an English element. Etymons: proper name Ann , -ite suffix¹. Etymology: < the name of Cape Ann in Massachusetts, U.S.A., where the mineral was first found + -ite suffix¹. Mineralogy. A rare mineral of the biotite group, typically occurring as black or dark brown prisms.Chemical formula: KFe₃AlSi₃O₁₀(OH)_1.5F_0.5. Crystal system: monoclinic. ΚΠ 1868 J. D. Dana Syst. Mineral. (ed. 5) v. 308 Annite Dana. The lepidomelane of Cape Ann..differs, according to the analyses, in having the O. ratio 1: 2: 3, instead of 1: 3: 4. In optical and other physical characters it is like lepidomelane. 1963 U.S. Geol. Surv. Prof. Paper No. 349-B. 42/1 Biotite is olive green; rock analysis indicates 65 percent annite, and 35 percent phlogopite. 2009 Econ. Geol. 104 1242/2 Two secondary minerals, goethite and kaolinite, form through the alteration of annite. This entry has been updated (OED Third Edition, March 2022). < n.1868
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