All rocks are made of one or more minerals. Minerals are solid, naturally occurring substances with well-defined crystal structure and chemical compositions. Rock and mineral collecting is a popular ...
En mesurant dans le domaine visible les fréquences des oscillations de groupements d'atomes, la spectrométrie Raman permet de déterminer la nature et parfois la structure des édifices polyatomiques ...
Malachite is known for its vibrant green colour and distinctive banded patterns. The bands are usually concentric and can range from light to dark green. Malachite forms through the weathering and ...
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