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1003-Rock And Minerals🤘 > Introductory Lecture🗿 > Flashcards

Introductory Lecture🗿 Flashcards

1
Q

Why does Calcite fizz when diluted HCL is poured onto it ?

A

Because CaCO3 reacts with HCL to form CO2

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2
Q

Which of these processes is not associated with the formation and weathering of extrusive igneous rock ?

A

Foliation

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3
Q

The process path of an igneous rock

A

Cooling of magma-crystallisation

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4
Q

What is the most common mineral group on Earth ?

A

Silicate group

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5
Q

Sulphur is a….

A

Native element

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6
Q

Basalt is an….

A

Extrusive( at earths surface) igneous rock

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7
Q

Rock salt is a….

A

Chemical sedimentary rock

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8
Q

What process most often takes place at Earths Surface ?

A

Mineral formation by evaporation of liquid and chemical precipitation

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9
Q

Mica is a…..

A

Sheet silicate

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10
Q

Coal is….

A

Organic

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11
Q

Rock minerals are…..

A

Inorganic

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12
Q

Quartz is….

A

Framework silicate

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13
Q

Pyrite is an……

A

Iron sulphide

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14
Q

Olivine is a……

A

Silicate with isolated tetrahydra

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15
Q

Marble is an…..

A

Metamorphic rock ( forms by recrystallisation of limestone at high temp and pressure in Earth )

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16
Q

Granite is an……

A

Intrusive igneous rock

17
Q

Which mineral scratches a copper coin, but not the blade of a knife ?

A

Apatite ( as has a hardness of 5 on the Mohs scale )

18
Q

What is cleavage ?

A

Cleavage follows flat planar surfaces with weak bond strength

19
Q

What are fractures ?

A

Fractures produce irregular surface planes.

20
Q

Intrusive igneous rocks have a…

A

Coarse crystalline texture

21
Q

Which type of rock is formed during seafloor spreading at mid-ocean ridges ?

A

Basalt ( extrusive igneous )

22
Q

What is marble ?

A

Marble is a metamorphic rock forms from limestone deep in the Earth.

23
Q

What is Granite ?

A

Igneous rock that forms in the Earth

24
Q

What is mudstone ?

A

Sedimentary

25
Q

What is the hardness of Diamond ?

A

10 🔟

26
Q

What is the hardness of Calcite ?

A

3

27
Q

Hardness of Gypsum ?

A

2

28
Q

Hardness of Quartz ?

A

7

1003-Rock And Minerals🤘 (4 decks)

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