Lustre

1
(No Transcript)
2
Lustre
Metallic
Metallic
3
Vitreous
Silky
Resinous
Waxy
4
Cleavage
1
2
4
3
5
Fracture
Conchoidal (obsidian)
Conchoidal (Quartz)
6
STREAK
Sphalerite Light brown
Hematite - Cherry Red
7
MOHS Scale of Hardness

• 1. TALC
• 2. GYPSUM
• 3. CALCITE
• 4. FLUORITE
• 5. APATITE
• 6. FELDSPAR
• 7. QUARTZ
• 8. TOPAZ
• 9. CORUNDUM
• 10. DIAMOND

8
Weight in air
Specific Gravity
(Weight in air) / (Weight in water )
Walkers Steel Yard Balance