Hexacelsian Explained

Hexacelsian
Category:	Silicate
Formula:	BaAl2Si2O8
Imasymbol:	Hcls^[1]
System:	Hexagonal
Class:	Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m)
Symmetry:	P63/mcm
Unit Cell:	a = 5.29, c = 15.56 [Å] (approximated)

Hexacelsian is a rare barium silicate mineral with the formula BaAl₂Si₂O₈. It was discovered in the Hatrurim Basin in Israel,^[2] where the Hatrurim Formation of rocks formed due to exposed pyrometamorphism.^[3]

Relation to other minerals

As suggested by its name, hexacelsian is related to celsian. This relation is polymorphous (celsian, a feldspar-group mineral, is monoclinic).^[4] Beside celsian, it is chemically similar to cymrite.^[5]

External links

• Hexacelsian on Mindat: Web site: Hexacelsian: Hexacelsian mineral information and data . Mindat.org . 2016-03-12.

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. Galuskina, I.O., Galuskin, E.V., Prusik, K., Vapnik, Y., Dzierżanowski, P., and Murashko, M., 2015. Hexacelsian, IMA2015-045. CNMNC Newsletter No. 27, October 2015, 1224; Mineralogical Magazine 79, 1229–1236
3. Web site: Hatrurim (Hatrurim Basin), Negev, Israel - Mindat.org . Mindat.org . 2016-03-12.
4. Web site: Celsian: Celsian mineral information and data . Mindat.org . 2016-03-12.
5. Web site: Cymrite: Cymrite mineral information and data . Mindat.org . 2016-03-12.