Friedelite
Phyllosilicate mineral
From Wikipedia, the free encyclopedia
Friedelite is a mineral[2] in the pyrosmalite group.[3] The mineral is named after Charles Friedel.
| Friedelite | |
|---|---|
| |
| General | |
| Category | Minerals |
| IMA symbol | Fdl[1] |
| Identification | |
| Mohs scale hardness | 4 - 5 |
| Streak | White |
Name
The name friedelite is only for pure Mn end-member of the group pyrosmalite.[4]: 30
The mineral was named in 1876 by Emile Bertrand after Charles Friedel.[3]
Characteristics
Color
Its color can be pale pink, dark brownish red, red, brown, or orangish red. It is normally found in 1 to 5 carats[5] as well as nontransparent.[2]
Fluorescence
The mineral has a colorful luminescense under UV light.[2] With the fluorescence being red, but at rare times it has a green or yellow fluorescence.[6]