Almarudite Explained
| Almarudite |
| Imasymbol: | Alr |
| Color: | Yellow to orange |
| Cleavage: | None Observed |
| Fracture: | Irregular/Uneven |
| Mohs: | 6 |
| Luster: | Vitreous |
| Streak: | Pale orange |
| Diaphaneity: | Transparent, Translucent |
| Gravity: | 2.714 |
Almarudite (IMA symbol: Alr[1]) is an extremely rare alkaline manganese beryllium silicate mineral of the cyclosilicates (ring silicates) class, with the chemical formula, from the volcanic environment of the Eifel Mountains in Germany.[2] [3]
References
- 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.
- http://www.mindat.org/min-25681.html Mindat
- Mihajlović T., Lengauer C.L., Ntaflos Th., Kolitsch U. and Tillmanns E. 2004: Two new minerals, Rondorfite, Ca8Mg[SiO<sub>4</sub>]4Cl2, and Almarudite, K([],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si<sub>12</sub>O<sub>30</sub>], and a study of iron-rich Wadalite, Ca12[(Al<sub>8</sub>Si<sub>4</sub>Fe<sub>2</sub>)O<sub>32</sub>]Cl6, from the Bellerberg volcano, Eifel, Germany, Neues Jahrbuch für Mineralogie - Abhandlungen, 179, pp. 265-294; http://d.wanfangdata.com.cn/NSTLQK_NSTL_QK7586341.aspx
