GEOLOGY 1403 LAB MIDTERM questions and answers 2025

GEOLOGY 1403 LAB MIDTERM
questions and answers 2025
Quartz (Smokey) - answer Mineral

Color: Smokey

Streak: Colorless

Luster: Vitreous

Cleavage: None

Hardness: 7

Specific Gravity: 2.6-2.7



Quartz (Milky) - answer Mineral

Color: White

Streak: Colorless

Luster: Vitreous

Cleavage: None

Hardness: 7

Specific Gravity: 2.6-2.7



Quartz - answer Mineral

Color: Colorless

Streak: Colorless

Luster: Vitreous

Cleavage: None

Hardness: 7

Specific Gravity: 2.6-2.7



Sphalerite - answer Mineral

Color: Yellow, Brown, Black, Red, Green, White, Colorless

Streak: White to yellowish brown

,Luster: Nonmetallic

Cleavage: Perfect in six directions

Hardness: 3.5 - 4.0

Specific Gravity: 3.9-4.1



Sulfur - answer Mineral

Color: Yellow

Streak: Yellow

Luster: Nonmetallic

Cleavage: None

Hardness: 1.5-2.5

Specific Gravity: 2.0-2.1



Amphibole - answer Mineral

Color: Black, Dark green

Streak: Colorless

Luster: Dull

Cleavage: 2,2 prismatic

Hardness: 5-6

Specific Gravity: 2.9-3.4



Apatite - answer Mineral

Color: Green, Brown, Blue, Yellow, Violet, Pink, Colorless

Streak: White

Luster: Vitreous

Cleavage: Poor

Hardness: 5

Specific Gravity: 3.1-3.3



Biotite - answer Mineral

Color: Black, Dark Green, Dark Brown

, Streak: White to gray

Luster: Vitreous

Cleavage: Basal, Perfect

Hardness: 2.5-3.0

Specific Gravity: 2.7-3.4



Calcite - answer Mineral

Color: Usually white or colorless

Streak: White

Luster: Vitreous

Cleavage: Perfect, three directions

Hardness: 3

Specific Gravity: 2.7



Corundum - answer Mineral

Color: Gray to Brown

Streak: Colorless

Luster: Vitreous

Cleavage: None

Hardness: 9

Specific Gravity: 3.9-4.1



Fluorite - answer Mineral

Color: Purple, Green, Yellow, Colorless, Blue, Red, Black

Streak: White

Luster: Vitreous

Cleavage: Four directions, perfect

Hardness: 4

Specific Gravity: 3.2



Galena - answer Mineral