rock and mineral

Question 1

mineral

Answer 1

In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form. The geological definition of mineral normally excludes compounds that occur only in living beings.

Question 2

Rock

Answer 2

the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans.

Question 3

Element

Answer 3

a part or aspect of something abstract, especially one that is essential or characteristic.

Question 4

Compound

Answer 4

a thing that is composed of two or more separate elements; a mixture.

Question 5

Crystal

Answer 5

a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.

Question 6

Color

Answer 6

the property possessed by an object of producing different sensations on the eye as a result of the way the object reflects or emits light.

Question 7

Luster

Answer 7

a gentle sheen or soft glow, especially that of a partly reflective surface.

Question 8

Streak

Answer 8

a long, thin line or mark of a different substance or color from its surroundings.

Question 9

Cleavage

Answer 9

a sharp division; a split.

Question 10

Fracture

Answer 10

the cracking or breaking of a hard object or material.

Question 11

Density

Answer 11

the degree of compactness of a substance.

Question 12

Ore

Answer 12

a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.

Question 13

Metallic minerals

Answer 13

Metallic minerals are minerals which contain one or more metallic elements. Metallic minerals occur in rare, naturally formed concentrations known as mineral deposits. … Metals such as nickel, copper and zinc are fundamentally important to modern society since they are used for an endless variety of purposes.

Question 14

Non-metallic minerals

Answer 14

Nonmetallic minerals are, for example, sand, gravel, limestone, clay, and marble. Such materials lack metallic characteristics like good electric and thermic conductivity, luster, rigor, and malleability; they are, however, essential for many industries.

Question 15

Gemstones

Answer 15

A gemstone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks

Question 16

Igneous rock

Answer 16

Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet’s mantle or crust.

Question 17

Sedimentary rock

Answer 17

Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth’s surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place.

Question 18

Metamorphic rock

Answer 18

Metamorphic rocks arise from the transformation of existing rock to new types of rock, in a process called metamorphism. The original rock is subjected to temperatures greater than 150 to 200 °C and, often, elevated pressure of 100 megapascals or more, causing profound physical or chemical changes.