PHOSPHATE

Question 1

Ca5(PO4)3(F,Cl,OH)

Answer 1

Apatite

Question 2

Hexagonal, commonly in crystals of long prismatic habit; some short prismatic or tabular. Also massive granular to compact masses.

Answer 2

Apatite

Question 3

What is the cleavage of apatite?

Answer 3

Basal poor

Question 4

What is the hardness of apatite?

Answer 4

5 (can be scratched by a knife)

Question 5

What is the specific gravity of apatite?

Answer 5

3.15 - 3.20

Question 6

What is the color of apatite?

Answer 6

Usually some shade of green or brown; also blue, violet, colorless. Luster vitreous to subresinous

Question 7

Widely distributed in igneous, metamorphic, and sdimentary rocks. It is also found in pegmatites and other veins, probably of hydrothermal origin.

Answer 7

Apatite

Question 8

T or F. Phosphate materials of bones and teeth are members of the apatite group.

Answer 8

T

Question 9

A massive, cryptocrystalline type) constitutes the bulk of phosphorite or phosphate rock.

Answer 9

Apatite

Question 10

LiAl(PO4)(F,OH)

Answer 10

Amblygonite

Question 11

Triclinic but usually occurs in coarse, cleavable masses.

Answer 11

Amblygonite

Question 12

What is the cleavage of amblygonite?

Answer 12

{100} perfect

Question 13

What is the specific gravity of amblygonite?

Answer 13

3.0 - 3.1

Question 14

What is the color of the amblygonite?

Answer 14

White to pale green or blue, rarely yellow.

Question 15

Found mainly in Li-bearing granite pegmatites in association with spodumene, tourmaline, lepidolite, and apatite.

Answer 15

Amblygonite

Question 16

CuAl6(PO4)4(OH)8·4H2O

Answer 16

Turquoise

Question 17

Rarely in minute triclinic crystals, usually cryptocrystalline. Massive compact, reniform, stalactitic.

Answer 17

Turquoise

Question 18

What is the cleavage of turquoise?

Answer 18

Basal perfect

Question 19

What is the hardness of turquoise?

Answer 19

6

Question 20

What is the specific gravity of turquoise?

Answer 20

2.6 - 2.8

Question 21

What is the common color of turquoise?

Answer 21

Blue, bluish green, green. Luster waxlike.