Khurayyimite and associated minerals: BSE images of typical spherulitic aggregates of khurayyimite: Cal—calcite, HSi—mixture of Ca-hydrosilicates and Khu—khurayyimite. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( https://creativecommons.org/licenses/by/4.0/ ). — Photo: Biljana Krüger, Irina O. Galuskina, Evgeny V. Galuskin, Yevgeny Vapnik & Mikhail N. Murashko · CC BY 4.0
Khurayyimite
Khurayyimite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₇Zn₄(Si₂O₇)₂(OH)₁₀·4H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: Vitreous luster.
IMA symbol Khu, IMA status: approved, named in 2019.
Found in cavities and veins in altered spurrite marbles of pyrometamorphic origin.
It is found associated with Calcite, jennite, foshagite, minerals of the tobermorite group and ettringite-thaumasite series. Distribution From near Khurayyim Mount (Jabal al Khurayyim).
The name refers to Khurayyim Mount (Jabal al Khurayyim), Um Al-Rasas Sub-district, central Jordan.