ES LAB TEST 1
Whitish-yellow, no streak translucent, greasy, <2.5, basal
Talc
Colourless, No streak, Transparent, Vitreous, <2.5, Basal
Gypsum
Brownish/pinkish white, No streak, translucent, greasy, 3, Rhombohedral
Calcite
Colourless, No streak, Transparent, Vitreous, 2.5-3, cubic
Halite
Colourless, No streak, transparent, vitreousm 5.5-7, conchoidal fracture
Quartz
Black, No Streak, Translucent, vitreous, 5.5-7, Prismatic not 90
Amphibole
Green/grey, No streak, translucent, metallic?, 5.5-7, prismatic @90
pyroxene
red/brown, no streak, translucent, vitreous, 5.5-7, prismatic @90
Orthoclase
White/grey, white, translucent, pearly, 5.5-7, prismatic @90
Plagioclase
silvery brown,light streak, translucent, pearly-vitreous, <2.5, basal
muscovite
Black brown, brown/grey, opaque, vitreous, 2.5-3, basal
Biotite
Grey, Grey, Opaque, Metallic, 3-5.5, uneven fracture
Magnetite
Brassy, Black/grey, opaque, metallic, 5.5-7, uneven fracture
Pyrite
Gold, grey, opaque, metallic, 3-5.5, uneven fracture
Chalcopyrite
Dark grey, brown, opaque, metallic, 3-5.5, Dodecahedral
sphalerite
Silver/grey, dark grey, opaque, metallic, 2.5-3, cubic
Galena
Dark grey, grey, opaque, greasy, <2.5, basal (can't really tell)
Graphite
Dull green, None, Translucent, Vitreous, 5.5-7, Conchoidal fracture
Olivine
Felsic, Phaneritic
Granite
Felsic, Aphanititc
Rhyolite
Intermediate, Phaneritic
Diorite
Intermediate, Aphanitic
Andesite
Mafic, Phaneritic
Gabbro
Mafic, Aphanitic
Basalt
Ultramafic
Peridotite
Felsic, Glassy
Obsidian
Felsic, Vesicular
Pumice
Pyroclastic
Tuff and Breccia
Mafic, Vesicular
Scoria
Sand sediment
Sandstone
Clay sediment
shale
Gravel sediment
Conglomerate
Halite sediment
Rock salt
Calcite sediment
Travertine
Quartz sediment
Chert
Gypsum sediment
Rock gypsum
Silt sediment
Siltstone
Microscopic calcite, grey/tan, homogenous
Micrite
White, crumbly powdery, planktonic algae
Chalk
Fossil shells in micrite matrix, grey/tan
Fossiliferous Limestone
Almost 100% bioclasts
Coquina
Altered organic matter, brown/black, light
Coal
Slaty cleavage, dull lustre, very low grade
Slate
Phyllitic foliation, silk/satin sheen, low grade
Phyllite
Schistose foliation, sparkle, medium grade
Schist
Gneissic foliation, Prominent banding, high grade
Gneiss
M-rock, limestone, calcite
Marble
M-rock, shale, random crystals
Hornfels
M-rock, Quartz sandstone, quartz
Quartzite