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All-mine Pig
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Iron smelted entirely from raw ore.
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Tectonics
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A branch of geology dealing with the broad architecture of the outer part of the Earth; i.e., the regional assembling of structural or deformational features, a study of their mutual relations, origin, and historical evolution. It is closely related to structural geology, with which the distinctions are blurred, but tectonics generally deals with larger features. Adj: tectonic. Syn: geotectonics
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Russian Crystal
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A colorless variety of gypsum.
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Jargon
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A colorless, yellow, or smoky gem variety of zircon.
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Tabular Crysta
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A crystal flattened parallel to any face.
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Face Stone
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A diamond inset in the face portion of a bit.
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Wall-rock Halo
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A dispersion pattern formed in the rock adjoining mineral deposits where the chemical composition has been modified by the ore-forming fluids.
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Tabular Deposit
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A flat tablelike or stratified bed; e.g., a coal seam.
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Vulcanites
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A general name for igneous rocks of fine grain size, normally occurring as lava flows, and thus in direct contrast with plutonites.
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