Earth Materials (Minerals) Lab

Question 1

Which mineral is magnetic?

Answer 1

Hematite

Question 2

What mineral has polysynthetic twinning?

Answer 2

Plagioclase

Question 3

Which minerals react with HCL? Which one reacts strongly and which one reacts weakly?

Answer 3

Calcite and Dolomite. Calcite reacts strongly and Dolomite reacts weakly.

Question 4

Mineral lusters

Answer 4

Vitreous (glassy), metallic, dull, earthy, pearly

Question 5

How hard is a fingernail?

Answer 5

2.5

Question 5

How hard is a copper penny?

Answer 5

=/< 3

Question 6

How hard is a steel nail?

Answer 6

5

Question 7

How hard is a glass plate?

Answer 7

5.5

Question 8

How hard is a ceramic streak plate?

Answer 8

6.5

Question 9

Biogenic vs. abiogenic

Answer 9

Biogenic means that the earth material consists of the remains of organisms or formed due to the activity of organisms, abiogenic means that the earth material resulted from a non-biological chemical reaction

Question 10

Earth material’s textures

Answer 10

Amorphous, single crystal, aggregate of crystals, or aggregate of grains