copper
metallic luster,
can scratch calcite and galena
fingernail wont scratch
can be scratch with nail or penny
apatite
glass can scratch apatite
hardness of 5
conchodial fracture
hexagonal prisms
hematite
red brown streak
quartz
shell like conchoidal fracture
no cleavage
harder than steel
colorless and transparent
Hornblende
60 and 120 degree cleavage plane
brown black
Pyrite
fools gold
metallic glassly luster
not scratched by masonary nail is 6.5 nail hard ness less than 5.5
blackish streak
Magnetite
magnetic
metallic luster
black or brown color
black streak
microcline/fedlspar/orthoclase
two planes 90 degree angles
can scratch glass but not a steel nail
galena
silvery grey metallic luster
perfect 3 plane 90 degree angle
blackish streak
calcite
can scratch with a copper penny but not fingernail
3d Rhombohedral Cleavage - parallelogram
white or clear
biotite
black mica
excellent cleavage splits into one sheet
garnet
dark red to black
dodecahedral
Gypsum
can scratch with fingernail
colorless white or grey
perfect cleavage in one direction similar to mica
Fluorite
purple or green cubes ,
can scratch with nail but not penny hardness 4
octohedral cleavage
muscovite
perfect cleavage in one direction
colorless or silvery-white
can scratch with fingernail
Augite
can scratch glass
dark green to black
2 plane nearly 90 degree
Albite
white colorless
2 cleavage planes that meet at 90 degrees
Albite often has very fine, parallel lines
pearly or glassy luster
Corundum
9 hardness - only a diamond can scratch
hexagonal prisms
Topaz
8 can scratch quartz or glass
talc
1 on hardness - fingernail can scratch
transulcent or opaque dark green
feels greasy or soapy
halite
cubic cleavage
3d 90 degree
colorless or white
