Kalsilite

Kalsilite
General
Category	Tectosilicate minerals, feldspathoid group
Formula	K Al Si O 4
IMA symbol	Kls [1]
Crystal system	Hexagonal
Crystal class	6 2 2 – Trapezohedral
Space group	P6322 (no. 182)
Identification
Color	Colorless, white, gray
Tenacity	Brittle
Mohs scale hardness	6
Luster	Vitreous, greasy
Streak	White
Diaphaneity	Transparent, Translucent
Specific gravity	2.59–2.62
References	[2]

Kalsilite (K Al Si O ₄) is a vitreous white to grey feldspathoidal mineral that is found in some potassium-rich lavas, such as from Chamengo Crater in Uganda. It has a relative hardness of 5.5.

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. "Kalsilite". mindat.org. Retrieved 2021-12-17.

• Webmineral.com
• Handbook of Mineralogy Archived 2019-05-08 at the Wayback Machine