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Goethite

Goethite is hydrated iron oxide[?], FeO(OH). Its hardness ranges from 5.0 to 5.5, and its specific gravity varies from 3.3 to 4.3. It is not generally considered very interesting as a mineral specimen; its main use is as an iron ore.

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Sanskrit language

... plural, dual). It has eight cases: nominative, vocative, accusative, instrumental[?], dative, ablative, genitive, and locative. It has over ten nou ...