Arzamastsevite, K <sub>6</sub> Al <sub>5</sub> Si <sub>6</sub> O <sub>20</sub> (OH) <sub>4</sub> Cl, a new zeolite with unique Si(OH) <sub>4</sub> group from the Lovozero alkaline massif, Kola Peninsula, Russia
Arzamastsevite (IMA2024-085), ideally K 6 Al 5 Si 6 O 20 (OH) 4 Cl, is new zeolite with unique Si(OH) 4 group.The mineral was found in natrolitized sodalite syenite from Parguaiv Mt.(674722.4N, 343510 E), Lovozero alkaline massif, Kola Peninsula, Russia.It occurs as short-prismatic crystals (average 60 m across) and anhedral grains (average 50 m across) and is associated with alkali feldspar, sodalite, natrolite, aegirine, magnesio-arfvedsonite, loparite, rhabdophane-(Ce), lamprophyllite, sphalerite, galena, pyrrhotite and pyrite.The largest observed rzamastsevite crystal is 180 m across.Aggregates of 2-5 crystals are typically observed.Arzamastsevite is colorless, with a vitreous lustre and white streak.The mineral is brittle.Cleavage was not observed; the fracture is uneven.The measured density is 2.50(5) gcm -3 , the density calculated using the empirical formula and single-crystal unit-cell
Authors
- Vladimir N. Bocharov (ORCID: https://orcid.org/0000-0002-8233-9635)
- Andrey A. Zolotarev (ORCID: https://orcid.org/0000-0003-1278-6904)
- Julia A. Mikhailova (ORCID: https://orcid.org/0000-0001-8962-1417)
- Sergey M. Aksenov
- Ekaterina A. Selivanova (ORCID: https://orcid.org/0000-0002-1116-7549)
- Yakov A. Pakhomovsky
Institutions
- St Petersburg University (RU)
- Kola Science Centre (RU)
Publication Details
- Journal
- Mineralogical Magazine
- Published
- 2025-11-26
- DOI
- https://doi.org/10.1180/mgm.2025.10182
- Primary Topic
- Zeolite Catalysis and Synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Saint Petersburg State University