Günterblassite R141209

Name: Günterblassite RRUFF ID: R141209 Ideal Chemistry: (K,Ca,Ba,Na,◻)₃Fe[(Si,Al)₁₃O₂₅(OH,O)₄]·7H₂O Locality: Rother Kopf, Gerolstein, Eifel, Germany Source: Ch. and H. Schäfer [view label] Owner: RRUFF Description: White to colorless platy crystals, associated with dark brown hydrobiotite, quartz, and albite. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Gunterblassite (1) ]

POWDER DIFFRACTION

RRUFF ID:

R141209.9

Sample Description:

Single crystal, powder profile is calculated

Cell Refinement Output:

a: 6.5270(13)Å b: 6.9734(14)Å c: 37.3342(75)Å
alpha: 90° beta: 90° gamma: 90° Volume: 1699.28(83)Å³ Crystal System: orthorhombic

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REFERENCES for Günterblassite
American Mineralogist Crystal Structure Database Record: [view record]
Williams P A, Hatert F, Pasero M, Mills S J (2011) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 10. New minerals and nomenclature modifications approved in 2011, Mineralogical Magazine, 75, 2549-2561 [view file]
Chukanov N V, Rastsvetaeva R K, Aksenov S M, Pekov I V, Britvin S N, Belakovskiy D I, Schüller W, Ternes B (2012) Günterblassite, (K,Ca)_3-xFe[(Si,Al)₁₃O₂₅(OH,O)₄]·7H₂O, a new mineral, the first phyllosilicate with triple tetrahedral layer (in Russian), Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva, 141, 71-79 [view file]
Chukanov N V, Rastsvetaeva R K, Aksenov S M, Pekov I V, Zubkova N V, Britvin S N, Belakovskiy D I, Schüller W, Ternes B (2012) Günterblassite, (K, Ca)_3-xFe[(Si,Al)₁₃O₂₅(OH, O)₄]·7H₂o, a new mineral: The first phyllosillicate with triple tetrahedral layer, Geology of Ore Deposits, 54, 656-662 [view file]
Rastsvetaeva R K, Aksenov S M, Chukanov N V (2012) Crystal structure of günterblassite, a new mineral with a triple tetrahedral layer, Doklady Chemistry, 442, 57-62 [view file]