Rhodochrosite

Rhodochrosite is a manganese carbonate mineral with chemical composition MnCO₃. In its (rare) pure form, it is typically a rose-red color, but impure specimens can be shades of pink to pale brown. The streak is white. Its Mohs hardness varies between 3.5 and 4. Its specific gravity is 3.5 to 3.7. It crystallizes in the trigonal system. The cleavage is typical rhombohedral carbonate cleavage in three directions. Crystal twinning often is present. It is transparent to translucent with refractive indices of nω=1.814 - 1.816 nε=1.596 - 1.598. It is often confused with the manganese silicate, rhodonite, but is distinctly softer.
See more at Wikipedia.org...

Noun
1. a mineral consisting of manganese carbonate; a source of manganese
(hypernym) mineral
(substance-meronym) manganese, Mn, atomic number 25

(n.)
Manganese carbonate, a rose-red mineral sometimes occuring crystallized, but generally massive with rhombohedral cleavage like calcite; -- called also dialogite.
  

General Information:
 Chemical Formula:
MnCO3
 Composition:
(Molecular Weight = 114.95 gm)
Manganese 47.79 % Mn
Carbon 10.45 % C 
Oxygen 41.76 % O 
 Empirical Formula:
Mn2+(CO3)
 IMA Status:
Approved IMA 1960
 Name Origin:
From the Greek rhodon -"rose" and chroma - "color."
Physical Properties:
 Cleavage:
[1011] Perfect, [1011] Perfect, [1011] Perfect
 Color:
pinkish red, red, rose red, yellowish gray, or brown.
 Density:
3.69
 Diaphaniety:
Translucent to subtranslucent
 Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Columnar - Forms columns, Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
 Hardness:
3 - Calcite
 Luminescence:
None.
 Luster:
Vitreous (Glassy)
 Streak:
white
More details...

Eng: rhodochrosite
Urdu: ایک معدنیات جس میں سُرخ یا گلابی رنگ کا مینگانیز کاربونیٹ شامل ہوتا ہے ۔