Rock Identification

Question 0

Crystalline

Answer 0

Made of crystal

Question 1

Define Texture

Answer 1

“Texture is the term used to describe the physical character of the constituents that make up a rock and how those constituents are arranged, such as whether they are made of interlocking and intergrown crystals or comprise layers of accumulated fragments.”

Question 2

Fragmental

Answer 2

Made of existing fragments of rock or minerals

Question 3

Crystalline texture

Answer 3

Minerals have grown together to form a mass of interlocking crystals
“usually harder and stronger than those with a fragmental texture. When they are broken they tend to fracture across crystals, often along mineral cleavage planes, resulting in flat areas on fracture surfaces that reflect and glint as they catch the light.

Question 4

Fragmental texture

Answer 4

Rocks have been formed by deposition well rounded grains

Question 5

Igneous rock

Answer 5

Formed from magma crystallisation process volcanic activity

Eg gabbro

Question 6

Sedimentary rock

Answer 6

Formed from well rounded sedimentary materials

Eg conglomerate greywacke

Question 7

Metamorphic rock

Answer 7

Formed during intense heat or pressure

Eg gneiss