User:Chris857/Pyrochroite
From Wikipedia, the free encyclopedia
Pyrochroite is a mineral with formula Mn(OH)2.
This is the sandbox of Chris857. A sandbox is a subpage of a template or article used to test a change to the main article or template before deploying said changes. Once you have finished with the test, please erase the contents of this page leaving this box ({{Sandbox notice}}) in place. (diff) See also: Main sandbox
|
Quick Facts Pyrochroite, General ...
Pyrochroite | |
---|---|
General | |
Category | Mineral |
Formula (repeating unit) | Mn(OH)2 |
Strunz classification | 4.FE.05 |
Dana classification | 6.2.1.3 |
Crystal system | Trigonal |
Space group | Hexagonal Scalenohedral H-M symbol: 3m (3 2/m) |
Unit cell | a = 3.31Å, c = 4.74Å, Z = 1[1] |
Identification | |
Cleavage | Perfect on {0001} |
Tenacity | Elastic |
Mohs scale hardness | 2.5 to 3 |
Luster | Pearly on cleavages[1] Adamantine [2] |
Streak | White[2] |
Diaphaneity | Translucent, opaque |
Density | 3.23 to 3.27 g/cm3 |
Optical properties | Uniaxial (-) |
Refractive index | nω = 1.680 to 1.681 nε = 1.720 to 1.723 |
Birefringence | δ = 0.040 |
Pleochroism | Visible |
Ultraviolet fluorescence | Non-fluorescent[2] |
References | [3] |
Close