A mineral is a solid, naturally occurring substance that has a specific chemical composition and a highly ordered internal (crystalline) structure



Yüklə 446 b.
tarix05.03.2018
ölçüsü446 b.
#30306



A mineral is a solid, naturally occurring substance that has a specific chemical composition and a highly ordered internal (crystalline) structure.

  • A mineral is a solid, naturally occurring substance that has a specific chemical composition and a highly ordered internal (crystalline) structure.



A solid, cohesive aggregate of grains of one or more minerals

  • A solid, cohesive aggregate of grains of one or more minerals















The size of atom is determined by electron cloud of the ION

  • The size of atom is determined by electron cloud of the ION



























Ion charges must sum to ZERO

  • Ion charges must sum to ZERO

  • Ion sizes must be compatible (electron cloud)







Temperature and pressure play defining roles in establishing stability of mineral

  • Temperature and pressure play defining roles in establishing stability of mineral



Why are there different forms of ice at different temperatures and pressures?

  • Why are there different forms of ice at different temperatures and pressures?



Why are there different forms of ice at different temperatures and pressures?

  • Why are there different forms of ice at different temperatures and pressures?

  • Because the ion sizes change, relative to each other, at different T & P, so the ideal packing changes.



How might stishovite occur naturally?

  • How might stishovite occur naturally?



How might stishovite occur naturally?

  • How might stishovite occur naturally?

  • Meteorites!



How might stishovite occur naturally?

  • How might stishovite occur naturally?

  • Meteorites!

  • Why are they still at the surface?



How might stishovite occur naturally?

  • How might stishovite occur naturally?

  • Meteorites!

  • Why are they still at the surface?

  • Metastability (too cold to change back)























































Yüklə 446 b.

Dostları ilə paylaş:




Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©genderi.org 2024
rəhbərliyinə müraciət

    Ana səhifə