Muscovite-2M1 [ KAl2(Si3Al)O10(OH)2 ]

Material properties

Formula KAl2(Si3Al)O10(OH)2
Crystal symmetry Monoclinic
Classification Muscovite
Variant Cr
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Aluminosilicate, Hydroxide, Polytype

Composition

Element Atoms
K 1
O 12
Si 3
Al 3
H 2
Total: 21

Specimens of Muscovite-2M1

Name Owner Materials Phase purity Image Spectra Techniques
MES135 Eucryptite CSIRO Albite, Eucryptite, Muscovite, Muscovite-1M, Muscovite-2M1 (4.0%) 4.0 1 Reflectance
M2753 Azurite CSIRO Azurite, Goethite (var. Al), Muscovite, Muscovite-1M, Muscovite-2M1 (3.8%), Quartz 3.8 0 —
MES103 Labradorite CSIRO Albite (var. Ca), Labradorite, Microcline, Muscovite-2M1 (3.8%), Quartz 3.8 0 —
M2253 Covellite CSIRO Chalcanthite, Chalcopyrite, Covellite, Muscovite-1M, Muscovite-2M1 (3.2%), Orthoclase, Quartz 3.2 0 —
M2500 Siderite CSIRO Muscovite, Muscovite-1M, Muscovite-2M1 (3.0%), Quartz, Siderite, Siderite (var. Mg, Ca) 3.0 0 —
M0774 Goethite CSIRO Goethite, Microcline, Muscovite, Muscovite-1M, Muscovite-2M1 (2.8%), Quartz 2.8 0 —
MT8407 Meionite CSIRO Kaolinite, Meionite, Montmorillonite, Muscovite, Muscovite-1M, Muscovite-2M1 (2.7%), Prehnite, Pumpellyite-(Mg) (var. Cr), Scapolite (group) 2.7 1 Reflectance
MT8503 Oligoclase CSIRO Muscovite-2M1 (2.6%), Oligoclase, Quartz 2.6 0 —
M2096 Scheelite CSIRO Ankerite, Arsenopyrite, Fluorapatite, Muscovite-2M1 (2.4%), Pyrite, Quartz, Scheelite 2.4 0 —
NR-MIC-118 Microcline CSIRO Albite (var. Ca), Microcline, Muscovite-2M1 (2.3%), Quartz 2.3 0 —
M1155 Apatite (manganoan) CSIRO Apatite (var. Mn), Calcite, Fluorapatite, Muscovite, Muscovite-1M, Muscovite-2M1 (2.0%), Quartz 2.0 0 —
M1611 Microcline CSIRO Albite (var. Ca), Microcline, Muscovite-2M1 (2.0%), Quartz 2.0 0 —
M2393 Albite CSIRO Albite, Muscovite-2M1 (2.0%) 2.0 2 Reflectance
MES300 Cookeite CSIRO Albite, Cookeite, Microcline, Muscovite, Muscovite-1M, Muscovite-2M1 (2.0%), Quartz 2.0 1 Reflectance
M0186 Stibnite CSIRO Calcite (var. Mg), Litharge, Muscovite-1M, Muscovite-2M1 (1.7%), Quartz, Siderite (var. Mg, Ca), Siderite, Stibnite, Wüstite 1.7 0 —
M1284 Orthoclase CSIRO Albite (var. Ca), Microcline, Muscovite-2M1 (1.3%), Orthoclase, Quartz 1.3 0 —
M1289 Oligoclase CSIRO Microcline, Muscovite-2M1 (1.1%), Oligoclase 1.1 0 —
M1296 Petalite CSIRO Albite (var. Ca), Microcline, Muscovite-2M1 (1.0%), Orthoclase, Petalite, Quartz 1.0 1 Reflectance