mohs scale of hardness Flashcards
1
Q
10
A
diamond formula: C Crystallography: cubic colorless yellow perfect cleavage
2
Q
9
A
Corundum Al203 triginal red/ pink glossy, saphire
3
Q
8
A
Topaz Al2SiO4 Orthorhombic white/ grey virteaous
4
Q
7
A
Quartz SiO2 Hexagonal any color no streak given
5
Q
6
A
Orthoclase K monoclinic colorless glossy surface
6
Q
5
A
Apatite Ca5 hexagonal green, dark green virteaous lustre
7
Q
4
A
Fluorite Caf2 Isometric cubic any color transluscent
8
Q
3
A
Calcite CacO3 trigonal any color transparent
9
Q
2
A
gypsum CaSO4 monoclinic colorless somewhat glittery
10
Q
1
A
talc Mg Si2O10 triclinic creme white beige platy, greasy
11
Q
objects used to test hardness
A
fingernail
copper coin
scratchblade
12
Q
sentence
A
the geologist couldnt find any other qualities to create diamonds
