The geosphere Minerals and rocks.

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Presentation transcript:

The geosphere Minerals and rocks

Geosphere

Minerals Solid, natural, definite chemical composition, arrengement of atoms (crystals) Silicates (quartz) and non-silicates (calcite)

Some minerals: quartz and biotite

Some more: gypsum and muscovite

Calcite Cubic shape White (or creamy)

Halite White and cubic (!) Taste: salty (try)

Quartz: easy to identify due to its shape…

Pyrite: fool's gold (Fe S2) Pale brass-yellow reflective Cubic Metallic luster Hardness: 6–6.5 Density:4.8–5 g/cm3

Minerals lab Name colour shape luster others quartz amatiste halite pyrite calcite