англ 6

The basic magmatic rock

• Gabbro

• Dunite

• Diorite

• Granite

• Nefeline sienite

Ideal crystall of pyrite

• Cube

• Octahedron + Pinacoid

• Hexagonal prism

• Tetragonal prism

• Rhombohedron

Ideal crystall of magnetite

• Octahedron

• Hexagonal prism

• Hexagonal dipyramid

• Tetragonal prism

• Rhombohedron

Ideal crystall of diamond

• Octahedron

• Cube

• Hexagonal prism + Hexagonal dipyramid

• Cube + Pinacoid

• Rhombododecahedron

In crystallography terminologies the word «clino» is

• Slope

• Board

• Versatile

• Ekran

• Table

The most identifying diagnostic particulars of montmorillonite

• Strong swilling in water

• Colour sea water

• Yellow-green colour, fat lustre

• Fibrous aggregates

Simple form of hexagonal syngony

• Hexagonal pyramid

• Octahedron

• Monohedron

• Dihedron

• Rhombic pyramid

Amazonite, green feldspar is a variety of

• Microcline

• Albite

• Orthoclase

• Labrador

• Anortite

In crystallography terminologies the word «pinax» is

• Board

• Slope

• Versatile

• Ekran

• Table

Contain 72.54% silica belongs to

• Granite

• Sienite

• Diorite

• Gabbro

• Dunite