Haircut Name Of Bench

A mineral is a natural inorganic solid that has an inner structure and chemically defined. There in the land about 4000 minerals each of which is defined by its chemical composition and internal structure.

A mineral is composed of chemically bonded atoms in an ordered arrangement to form a particular crystalline structure. The orderly arrangement seen in regular shaped objects called windows. The structure crystal is given by the charge of the ions and their size. Mineral Properties

Hardness is a property that measures the ease with which they can scratch the surface of a mineral. Diamond is the hardest known mineral, it can scratch the glass and quartz. In 1822 Friedrich Mohs hardness scale invented, based on the ability of a mineral to scratch another. The talc is less hard and the hardest diamond. Properties
minerals
Hardness is a property that measures the ease with which they can scratch the surface of a mineral. Diamond is the hardest known mineral, it can scratch the glass and quartz. In 1822 Friedrich Mohs hardness scale devised based the ability of a mineral to scratch another. The talc is less hard and the hardest diamond.


covalent bonds usually hardest mineral form ionic bonds. The hardness of a mineral depends mainly on the type of link that exists between atoms. The crystal structure that holds the mineral also varies the hardness, the structure will depend primarily on three factors:

1) The size of atoms: A shorter distance between atoms becomes greater electron attraction between them.

2) The Charge: The charge difference between the ions determine the attraction between them.

3) The atomic arrangement: The more closed is the packing of atoms and ions, the harder the mineral.
"A mineral is composed of chemically bonded atoms in an ordered arrangement to form a particular crystalline structure."

Cleavage (exfoliation): The tendency of a mineral to break along a flat surface. The term is used to describe the geometric arrangement produced by the breakup. The cleavage varies inversely with bond strength. If the links are strong cleavage is bad and if the link is weak cleavage will be good. Usually in ionic bonds cleavage is better than covalent bonds. The number of levels and patterns of cleavage is found in many rock-forming minerals. Muscovite has a single plane of cleavage but calcite and dolomite have three directions of cleavage. Determined the crystal structure of the cleavage planes and crystal faces. In crystals with little cleavage is possible that this cleavage corresponds to the crystal faces. The faces are formed along many planes defined by columns of atoms and ions. The cleavage occurs along these planes.

Specific Gravity: Each mineral has a definite weight per cubic centimeter, this feature is generally described weight against the weight of an equal volume in water, the resulting number is what is called specific gravity of the mineral. The specific gravity of a mineral increases with the atomic number of the mass of the constituent elements and the approximate or compaction that are arranged in the crystal structure.

Color: Although the color is not a property safe for the identification of most minerals, it is used in some general distinctions. For example, ferrous minerals, usually dark in color can be dark gray, dark green and black. The aluminum-containing minerals are light in color, which may include purple, deep red, yellow and some shades of brown.

Brightness: Refers to the appearance of light reflected from a mineral. Metal-like minerals are said to have metallic luster color independent of having. The metal part is submetálicos. The minerals of non-metallic luster can be vitreous luster, pearly, silky, resinous and earthy.

Raya: The streak of a mineral is the color that it occurs when finely pulverized. The scratch can be very different from the color of the hand specimen. For example, the hematite may be brown, green or black, but the scratch is always a reddish brown.

Fracture: When minerals have no cleavage then they have broken. Most are broken into uneven surfaces but they can also break into smooth curves (conchoidal fracture) or chips.