Silicate Minerams Structures

Question 1

Single tetrahedra description

Answer 1

Single tetrahedra are bonded to cations

Question 2

Single tetrahedra Si:O

Answer 2

1:4

Question 3

Single tetrahedra charge

Answer 3

4-

Question 4

Single tetrahedra examples

Answer 4

Olivine

Question 5

Single chain description

Answer 5

Single tetrahedra share oxygen atoms to form chains

Question 6

Single chain Si:O

Answer 6

1:3

Question 7

Single chain charge

Answer 7

2-

Question 8

Single chain examples

Answer 8

Pyroxenes (Augite)

Question 9

Double chains description

Answer 9

Two single chains combined. Alternate tetrahedra in parallel chains are linked

Question 10

Double chain Si:O

Answer 10

4:11

Question 11

Double chain charge

Answer 11

6-

Question 12

Double chain example

Answer 12

Amphiboles (hornblende)

Question 13

Sheet structure description

Answer 13

Each tetrahedra shares 3 of its oxygen atoms with adjacent tetrahedra

Question 14

Sheet Si:O

Answer 14

2:5

Question 15

Sheet charge

Answer 15

4-

Question 16

Sheet example

Answer 16

Mica

Question 17

Framework description

Answer 17

All 4 oxygens of the tetrahedra are shared by adjacent tetrahedra

Question 18

Framework Si:O

Answer 18

1:2

Question 19

Framework charge

Answer 19

0

Question 20

Framework examples

Answer 20

Quartz and feldspars