A Caltech Library Service

Vanadium-rich Muscovite from Austria: Crystal Structure, Chemical Analysis, and Spectroscopic Investigations

Ertl, Andreas and Rakovan, John and Hughes, John M. and Bernhardt, Heinz-Jürgen and Rossman, George R. (2019) Vanadium-rich Muscovite from Austria: Crystal Structure, Chemical Analysis, and Spectroscopic Investigations. Canadian Mineralogist, 57 (3). pp. 383-389. ISSN 0008-4476. doi:10.3749/canmin.1900020.

[img] PDF - Published Version
Creative Commons Attribution.


Use this Persistent URL to link to this item:


The crystal structure of a green, transparent, vanadium-rich muscovite-2M_1 (V_2O_3 = 11.35 wt.%, one of the highest amounts reported to date in muscovite) with the optimized formula (K_(0.94)Na_(0.06))M2(Al_(1.20)V^(3+)_(0.61)Mg_(0.12)Cr^(3+)_(0.07))T1(Si^(1.54)Al_(0.46))T2(Si_(1.54)Al_(0.46))O_(10)(OH)_2 and space group C2/c, a 5.2255(6), b 9.0704(10), c 20.0321(21) Å, β 95.773(2)°, Z = 4 has been refined to R = 6.97% for 1070 unique reflections (MoKα). This muscovite, which occurs in small quartz veins in graphite schist from Weinberg mountain, near the village of Amstall, Lower Austria, is distinctly low in Cr (Cr_2O_3 ∼1.4 wt.%) and Mg (MgO ∼1.1 wt.%); Fe, Mn, and Ti are below detection limit. All octahedral cations occupy the M2 site, and the average octahedral bond (M2–O) distance is 1.953 Å. Structural distortions include α = 8.89° and Δz = 0.193 Å, resulting in an interlayer spacing of 3.35 Å. The optical absorption spectrum of this V-rich muscovite shows absorption features at 427 and 609 nm that define a transmission window centered at 523 nm. These absorption features are consistent with those expected for V^(3+) in mica, but the 609 nm band has a slightly longer wavelength than in low-V micas.

Item Type:Article
Related URLs:
URLURL TypeDescription
Rossman, George R.0000-0002-4571-6884
Additional Information:© 2018 Mineralogical Association of Canada. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (, which permits unrestricted use, distribution and reproduction in any medium, provided the original work is appropriately credited. Received May 18, 2004. Revised manuscript accepted March 19, 2019. We thank Andreas Wagner, Vienna, Austria, for preparing the sample of V-rich muscovite. This work was supported in part by the Austrian Science Fund (FWF) project no. P 26903-N19 and P 31049-N29 (AE), NSF grants EAR-0003201 (JR and JMH), and EAR-0125767 and EAR-0337816 to GRR. We sincerely thank Steve Guggenheim and an anonymous reviewer for their reviews of the manuscript and Robert F. Martin for his helpful comments.
Funding AgencyGrant Number
Fonds zur Förderung der wissenschaftlichen Forschung (FWF)P 26903-N19
Fonds zur Förderung der wissenschaftlichen Forschung (FWF)P 31049-N29
Subject Keywords:vanadium-bearing muscovite-2M1, crystal structure, graphite schist, Amstall, Austria
Issue or Number:3
Record Number:CaltechAUTHORS:20190506-154938712
Persistent URL:
Official Citation:Andreas Ertl, John Rakovan, John M. Hughes, Heinz-Jürgen Bernhardt, George R. Rossman; Vanadium-rich Muscovite from Austria: Crystal Structure, Chemical Analysis, and Spectroscopic Investigations. The Canadian Mineralogist ; 57 (3): 383–389. doi:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95270
Deposited By: Tony Diaz
Deposited On:06 May 2019 23:28
Last Modified:16 Nov 2021 17:11

Repository Staff Only: item control page