Friedelite

Friedelite
General
CategoryMineral
IMA symbolFdl[1]
Identification
Mohs scale hardness4 - 5
StreakWhite


Friedelite is a mineral[2] in the pyrosmalite group.[3] The mineral is named after Charles Friedel.

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]

References

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b c "Friedelite". National Gem Lab. 2017-03-09. Retrieved 2021-10-12.
  3. ^ a b "Friedelite". www.mindat.org. Retrieved 2021-10-13.
  4. ^ Brigatti, M. F.; Mottana, A. (2011-11-15). Layered Mineral Structures and their Application in Advanced Technologies. The Mineralogical Society of Great Britain and Ireland. ISBN 978-0-903056-29-8.
  5. ^ "Friedelite Value, Price, and Jewelry Information". International Gem Society. Retrieved 2021-10-13.
  6. ^ Schumann, Walter (2009). Gemstones of the World. Sterling Publishing Company, Inc. p. 56. ISBN 978-1-4027-6829-3.


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