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Definition: ILVAITE

Part of Speech Definition
Noun 1. A silicate of iron and lime occurring in black prismatic crystals and columnar masses.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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Date "Ilvaite" was first used in popular English literature: sometime before 1914. (references)

Specialty Definition: ILVAITE

Domain Definition
Mining An orthorhombic and monoclinic mineral, CaFe2 FeSi2 O (sub 7) O (OH); in prisms with vertically striated faces; compact, massive, or fibrous; in some magnetite orebodies, in zinc and copper ores, in contact deposits in dolomitic limestone, and in sodalite syenite near Julianehaab, Greenland. Syn: elbaite; lievrite. (references)
Wikipedic Ilvaite is a sorosilicate of iron and calcium with formula: CaFe2+2Fe3+Si2O7O(OH). Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the orthorhombic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite. (references)

Source: compiled by the editor from various references; see credits.

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Extended Definition: ILVAITE

Ilvaite

Ilvaite (Unknown scale)
Ilvaite (Unknown scale)

Ilvaite is a sorosilicate of iron and calcium with formula: CaFe2+2Fe3+Si2O7O(OH). Both manganese and magnesium substitute in the structure. Ilvaite crystallizes in the orthorhombic system in black prismatic crystals and columnar masses. It is black to brownish black to gray and opaque. It has a Mohs hardness of 5.5 to 6 and a specific gravity of 3.8 to 4.1. Ilvaite is structurally related to lawsonite.

It occurs in contact metamorphic rocks and skarn ore deposits. It also occurs less commonly in syenites.

Ilvaite was first described in 1811 on the island of Elba and the name ilvaite from the Latin name ilva of the island. Sometimes referred to as Yenite

References

Source: adapted by the editor from Wikipedia, the free encyclopedia; from the article "Ilvaite". Image Credit.
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Topics by Level of Interest: ILVAITE

Topics sorted by level of Interest Level (1=low, 600=high)     Topics sorted Alphabetically Level (1=low, 600=high)
Ilvaite 4     Ilvaite 4

Source: the editor, created by/for EVE to gauge likely levels of human interest in linguistically triggered topics (compiled across various sources, such as Wikipedia and specialty expression glosses).