Friedelite Explained

Imasymbol:	Fdl^[1]
Mohs:	4 - 5
Streak:	White

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

Name

The name friedelite is only for pure Mn end-member of the group pyrosmalite.^[3]

The mineral was named in 1876 by Emile Bertrand after Charles Friedel.^[4]

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.

Fluorescence

The mineral has a colorful luminescense under UV light. With the fluorescence being red, but at rare times it has a green or yellow fluorescence.^[6]

Notes and References

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