Ferro-ferri-hornblende

General
Category| Inosilicate
Amphibole supergroup
Formula
(repeating unit)| ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2
Crystal system| Monoclinic
Crystal class| Prismatic (2/m)
(same H-M symbol)
Space group| C2/m
Unit cell| a = 9.93, b = 18.22
c = 5.32 [Å], β = 104.86° (approximated)
Identification
References| [1][2]

Ferro-ferri-hornblende is an amphibole-supergroup mineral with the formula ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2. It contains essential vacancy (☐). It was discovered in the Traversella mine, Canavese, Torino, Piedmont, Italy.[1]

## References

1. ↑ 1.0 1.1 Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., Pagano, R., and Pagano, A., 2015. Ferro-ferri-hornblende, IMA 2015-054. CNMNC Newsletter No. 27, October 2015, 1227; Mineralogical Magazine 79, 1229–1236
2. ↑ "Ferro-ferri-hornblende: Ferro-ferri-hornblende mineral information and data". http://www.mindat.org/min-43379.html. Retrieved 2016-03-13.
3. ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Ferro-ferri-hornblende. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Ferro-ferri-hornblende&oldid=561415"