MT3: Minerals with Nonmetallic Luster
- Hardness <5.5
- Streak that is colored
Streak |
Cleavage |
Other |
Mineral |
Yellow |
None |
Yellow in color; resinous or vitreous luster |
Sulfur S |
Six (possibly visible) |
Light yellow, yellowish brown, black in color; resinous or vitreous luster; faint odor |
Sphalerite ZnS |
|
Blue |
None |
Azure blue in color; occurs as coatings, masses or small crystals |
Azurite Cu3(CO3)2(OH)2 |
Green |
None |
Bright green; occurs as coatings, masses or small crystals |
Malachite Cu2CO3(OH)2 |
