Mineral Identification

Descripción

mineral sample pictures and names with some key features for identification
Alex L
Fichas por Alex L, actualizado hace más de 1 año
Alex L
Creado por Alex L hace alrededor de 5 años
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augite/pyroxene- key feature: 2 directions of cleavage nearly 90 degrees
augite/pyroxene- key feature: 2 directions of cleavage nearly 90 degrees
biotite - key feature: peels into thin flakes, darker than muscovite
biotite - key feature: peels into thin flakes, darker than muscovite
calcite - key feature: reacts with acid
calcite - key feature: reacts with acid
galena - key feature: cubic formations, heavy
galena - key feature: cubic formations, heavy
garnet
garnet
graphite - key feature: can scratch with fingernail, writes like pencil lead
graphite - key feature: can scratch with fingernail, writes like pencil lead
gypsum - key feature: can scratch with fingernail
gypsum - key feature: can scratch with fingernail
halite - key feature: salty taste, 3- directional cleavage at 90 degrees (cubic)
halite - key feature: salty taste, 3- directional cleavage at 90 degrees (cubic)
hematite - key feature: red streak, may be weakly magnetic
hematite - key feature: red streak, may be weakly magnetic
hornblende/amphibole
hornblende/amphibole
magnetite - key feature: magnetic
magnetite - key feature: magnetic
muscovite - key feature: peels into thin flakes, lighter in color than biotite
muscovite - key feature: peels into thin flakes, lighter in color than biotite
olivine
olivine
orthoclase (or Potassium Feldspar)
orthoclase (or Potassium Feldspar)
plagioclase feldspar
plagioclase feldspar
pyrite
pyrite
quartz
quartz
talc- key feature: soapy feel, softer than fingernail
talc- key feature: soapy feel, softer than fingernail
specular hematite
specular hematite
fluorite- key feature: cleaves into octahedrons
fluorite- key feature: cleaves into octahedrons
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