Minerals

Minerals

Naturally occurring substance that is solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals, and does not have a specific chemical composition. The general definition of a mineral encompasses the following criteria: 1 - Naturally occurring 2 - Stable at room temperature 3 - Represented by a chemical formula 4 - Usually abiogenic 5 - Ordered atomic arrangement

Industrie : Géologie; Mines

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Minerals

Diamant bleu

Mines; Minerals

Sur msn.news.com, il a été signalé qu'un diamant rare 29,6 carat bleu a récemment découvert en Afrique du Sud avec un valeur de prix allant dans des dizaines de millions de dollars. Le gland taille ...