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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
CaSO4*2H2O I t build minerals(plaster,etc), ceramics AND clear to white color,Translucent , Silky luster, Fibrous crystals cleavage 1 direction	Gypsum
NaCl Table salt, chemical industry, meat preservative AND clear / white color 3 cleavage at 90'(cubic) feels greasy if held in hand salty taste luster waxy	Halite
CaCO3 cement, lime, optical lense AND clear to white/yellow 3 cleavages at 75' and Translucent Transpar. may double refractive acid fizz	Calcite
color clear/yellow/blue/green/violet 4 cleavage (octahed) translucent/transparent, cubic xtal form, vitreous luster	Fluorite
Mg(Si4O10)(OH)2 And color green to blue/ grey to white, soapy feel, cleavage 1 direction, hard to detect	Talc
blac color, gold weathering flecks, stacked thin sheets, translucent to transparent	Biotite
colorless to silverish-grey:cellophane like, thin elastic sheets, translucent to transparent	Muscovite
molted yellowish-brown colors, cleavage 6 directions, not all visible, streak pale yellow, luster vitreous to resinous	Sphalerite
Bright to dark grass green, streak green, often encrusting habit, sometimes smooth irregular masses; or straining	Malachite
deep "azure blue" color, streak blue, often encrusting habit;sometimes smooth irregular masses	Azurite
Al2O3*2H2O Aluminum source, sandpaper abrasive AND Beige-brown color,form rounded pea- like masses (pisolitic), often waxt to dull luster, opaque	Bauxite
Al4Si4O10(OH)8, Pottery, stoneware, brick, porcelain, china, and ceramics, paper, medicine, cosmetics, AND white, earthy, chalky masses, easily scratched with fingernails, earthy odor, grainy to fine particles	Kaolinite
Brass yellow color, conchoidal fracture, striations, streak greenish-black, cubic xtals and aggregates	Pyrite
Fe3O4, Iron and steel, natural magnets, motors and electrical applications AND often dark color, streak black to grey, magnetic, rusty appearance	Magnetite
Fe2O3, source of iron AND streak red/brown, sometimes "flesh" of metal, rich red color, tarnishes red-brown, dull, rich bricks red color, earthy	Hermatite
Fe2O3*nH2O, pigment, source of iron AND orange-brown or rusty yellow, dull earthy, streak yellow or brown, often non-metallic, often sandy	Limonite
FeCr2o4, source of chrome; non rusting surfaces; aircraft parts AND black or brownish black color, granular aggregate, streak brown black, fracture	Chromite
PbS, source of lead, fishing weights, x-ray shielding equipment AND 3 directions of cleavage, perfect cubic, silvery grey color, marks paper, streak grey/ black	Galena
C, lubricants, pencil lead AND grey to black, bloblike mass, marks paper easily, greasy feel streak grey/black	Graphite
dark greenish to dark greenish black, cleavage 2 planes at nearly 90'	Augite
salmon pink color cream, 2 cleavages at nearly 90', often has crooked shallow lines on flat surfaces	Orthoclase
"tooth white" color, white with light bluish tinge, may also has crooked lines,cleavages at nearly 90'	Plagioclase
olive green to black color, appears "sugary", small, translucent grains,which fall off, bo streak	Olivine
translucent-transparent xtals, no streak, may be horizontally striated, conchoidal fractures, 6 sided xtals taper to a point glassy luster	Quartz
dark grey, often light outer "skin" opaque "sparks" with iron, conchoidal fracture, waxy or dull luster, microcrystalline	Flint
texture is Phaneritic light pink orange color	Granite (Felsic)
texture is Phaneritic white black specks	Diorite (intermediate)
Dark color, texture is Phaneritic	Gabbro (mafic)
texture Aphanitic greyish pink	Rhyolite (felsic)
texture Aphanitic , greyish silivercolor	Basalt (Mafic)
brownish color texture Porphyritic	Andesite Porphyry (Intermediate)
texture Hyaline (glassy) Color black	Obsidian (all compsition)
texture Vesicular color whitish brown	Pumice (Felsic)
pinkish and dark greyish color texture Vesicular	Scoria (Intermediate/Mafic)
clay-sized particles (less than 1/16mm), layered, soft, often brown or black	Shale
fine grained; breaks into flat pieces, marked by silky, silvery luster as though rubbed by pencil lead along flat surface, shale and Siltstone	Phyllite
granules, pebbles & gravel greater than 2mm in size , Angular clasts	Breccia
granules, pebbles & gravel greater than 2mm in size, Rounded Clasts	Conglomerate
CaS*OHO, Creamy with grey swirls, soft, waxy luster	Rock Gypsum
NaCl, salty taste, typically interlocking crystals, color clear to white and translucent, sometimes grayish from impurities, will sweat, becoming slippery or greasy if held in hand for a minute	Rock Salt
CaCO3, Cream, tan to brownish in color, dense, crystal microscopic, fizzes strongly with HCI	Fine grained limestone
(Ca,Mg)2CO3 Greyish-blue, interlocking crystals, fizzes with HCL only if scratched	Dolostone (Dolomite)
black, dull luster, brittle, black easily smudges off on finger, composed of carbon (C)	Coal
brown, decayed plant fibers. Soft organic matter composed of carbon (C)	Peat
white, sift, leaves chalk residue. fizzes with HCL. composed of CaCO3	Chalky Limestone
Fossils or imprints of fossil embedded in dense limestone. fizzes with HCL, dense, composed of CaCO3	Fossiliferous Limestone
porous, cemented shell fragments, fizzes strongly with HCL,CaCO3	Coquina
fined grained, breaks into flat pieces, very compact, dense, with dull sheen on smooth surface	Slate
fine grained, breaks into flat pieces, marked by silky, silvery luster as though rubbed by pencil lead along flat surfaces	Phyllite
medium grained micas visible - glitter to fish scale like. Breaks uneven and wavy surfaces	Mica Schist
coarse grained;minerals have segregated into altering "layers" of light and darked colored bands	Gneisis
very coarse; broken and flattened quartz pebbles, dense and hard (SiO)	Quartz Metaconglomerate
smaller crystals masses often "sugary", large crystalline masses often glassy or greasy in appearance, very hard, color visible (SiO2)	Quartzite
fine grained, shades of green;espically "pistachio green: or :chlorite ggreen", dense, (variety of mineral composition)	Serpentine
coarsely crystalline, often waxy luster, color varies, tends to be cream to white, grey, sometimes orange or dense swirls, fizzes mildy with HCL. (CaCO3)	Marble