Calcite | Buy Calcite

Calcite

Calcite (CaCO₃) is a mineral from the carbonate group.It is a very common mineral which is found worldwide,it occurs in Igneous,Sedimentary,Metamorphic Rocks.

Calcite has the following properties:

1.Hardness:3 On the Moh Scale.

2.Color:White or colorless but can have a wide range of colors
(Violet,yellow,blue,green,red,grey,brown,black,orange etc.) Due to impurities.

3.Specific gravity:2.71.

4.Cleavage:Perfect {1011} on all three directions,Rhom bohedral.

5.Habit:Many crystal habits some of which are (Massive,concretionary,granular,rhombohedral,crystalline,talactitic)

6.Fracture:Conchoidal.

7.Luster:Vitreous (Glassy) or Pearly.

8.Streak:White.

Some other properties that Calcite shows are:

A.Solubility:Dissolves and reacts with acid.
B.Diaphaneity:Transparent,Translucent,Opaque.
C.Double Refraction.
D.Tenacity:Brittle.
E.Optical properties:Uniaxial.
F.Crystal system:Trigonal.
G.Twinning:Twin Twinning

Mineral Classes | Types of Rocks and Minerals

Mineral Classes

Minerals are divided into classes depending upon their chemical composition.

Classes:

1.Element class:It is the class where minerals are their natural elements such as Gold,Silver,Copper,Antimony,Sulfur,Graphite,Bismuth.

2.Silicate class:They are the hugest mineral group and consist mainly of Silicon and Oxygen with some other ions such as Iron,Aluminum and Calcium are a few examples.Some silicate examples are Quartz,Feldspars and Garnets.

3.Sulfide class:It is the class where minerals contain sulfur and some metal in their composition,For example Pyrite which contains Sulfur and Iron (Iron Sulfide).

4.Oxide class:It is the class where the minerals consists of Oxygen and some metals,For example Hematite (Iron Oxide).

5.Halides class:It is the class where minerals consist of Metal and the Halogen elements,For example Fluorite (Calcium Fluoride).

6.Carbonate class:It is the class where minerals have (CO₃)²− in their chemical composition,For example Calcite (Calcium Carbonate).

7.Sulfate class:It is the class where minerals have SO₄ ²- in their chemical composition,for example Gypsum (Hydrated Calcium Sulfate).

8.Phosphate class:It is the class where minerals have Z O₄ In their chemical composition where Z can be Arsenic,Antimony,Vanadium and Phosphorus.An example of a Phosphate is Apatite Ca₅(PO₄)₃(OH,F,Cl).

9.Organic class:It is minerals formed with some geological processes and contain some biological substances,Such as the Resin found In Amber.