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⇱ Cualstibite-1M: Mineral information, data and localities.

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Cualstibite-1M

A structural variant of Cualstibite
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About Cualstibite-1MHide

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Formula:
(Cu,Al)3(OH)6[Sb5+(OH)6]
Ideal Cu:Al ratio is 2:1; very minor Mg may replace some of the Cu (Kolitsch et al., 2013).
Colour:
Pale bluish, pale blue-green, greenish
Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
Polytype of cualstibite.
A polytype of Cualstibite

The original name cyanophyllite (given by K. Walenta in 1981), from the Greek for blue (κυανός) and a leaf (φύλλον), in allusion to the color and habit, was discredited in 2012 (IMA 12-B) during the definition of the hydrotalcite supergroup (Mills et al., 2012), since it was recognised as a polytype of cualstibite.


Unique IdentifiersHide

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Mindat ID:
1202
Long-form identifier:
mindat:1:1:1202:3

Classification of Cualstibite-1MHide

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7.13.8

7 : Oxides and Hydroxides
13 : Oxides of As, Sb and Bi

Physical Properties of Cualstibite-1MHide

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Vitreous
Transparency:
Transparent, Translucent
Colour:
Pale bluish, pale blue-green, greenish

Chemistry of Cualstibite-1MHide

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Mindat Formula:
(Cu,Al)3(OH)6[Sb5+(OH)6]

Ideal Cu:Al ratio is 2:1; very minor Mg may replace some of the Cu (Kolitsch et al., 2013).
Element Weights:
Element% weight
O37.173 %
Cu36.911 %
Sb23.575 %
H2.342 %

Calculated from ideal end-member formula.

Crystallography of Cualstibite-1MHide

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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 9.938(1) Å, b = 8.890(1) Å, c = 5.493(1) Å
β = 102.90(1)°
Ratio:
a:b:c = 1.118 : 1 : 0.618
Unit Cell V:
473.05 ų
Z:
2
Twinning:
Multiple twinning due to pseudotrigonal symmetry.
Comment:
Originally assumed to be orthorhombic (Walenta, 1981).

X-Ray Powder DiffractionHide

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Powder Diffraction Data:
d-spacingIntensity
9.67 Å(6)
4.84 Å(10)
4.59 Å(4)
4.46 Å(4)
2.59 Å(6)
2.44 Å(5)
1.917 Å(4)

First Recorded Occurrence of Cualstibite-1MHide

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Synonyms of Cualstibite-1MHide

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Other Language Names for Cualstibite-1MHide

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Common AssociatesHide

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Associations Based on Photo Data:
10 photos of Cualstibite-1M associated with AzuriteCu3(CO3)2(OH)2
3 photos of Cualstibite-1M associated with CornwalliteCu5(AsO4)2(OH)4
3 photos of Cualstibite-1M associated with QuartzSiO2
3 photos of Cualstibite-1M associated with Cyanotrichite Group
3 photos of Cualstibite-1M associated with CualstibiteCu2Al(OH)6[Sb5+(OH)6]
3 photos of Cualstibite-1M associated with BariopharmacosideriteBa0.5Fe3+4(AsO4)3(OH)4 · 5H2O
2 photos of Cualstibite-1M associated with MalachiteCu2(CO3)(OH)2
2 photos of Cualstibite-1M associated with 'Cualstibite-1T'Cu2AlSb(OH)12
1 photo of Cualstibite-1M associated with Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
1 photo of Cualstibite-1M associated with DundasitePbAl2(CO3)2(OH)4 · H2O

Other InformationHide

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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Cualstibite-1MHide

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mindat.org URL:
https://www.mindat.org/min-1202.html
Please feel free to link to this page.

References for Cualstibite-1MHide

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Reference List:

Localities for Cualstibite-1MHide

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Showing 14 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria
  • Carinthia
    • Sankt Veit an der Glan District
      • Guttaring
        • Ratteingraben
Auer et al. (2017)
  • Styria
    • Bruck-Mürzzuschlag District
      • Sankt Barbara im Mürztal
        • Veitsch
Auer et al. (2017)
    • Leoben District
      • Kammern im Liesingtal
        • Seiz
          • Wolfsgruben (Wolfgruben; Wolfsgrube)
Auer (2019)
France
  • Grand Est
    • Vosges
      • Épinal
        • Le Val-d'Ajol
          • Faymont
Escande et al. (1973) +6 other references
Escande et al. (1973) +6 other references
  • Occitanie
    • Aude
      • Narbonne
        • Padern
Favreau et al. (2003)
Germany (FRL)
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Walenta (1981) +4 other references
  • North Rhine-Westphalia
    • Arnsberg
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
            • Helmke quarry nature reserve
Schnorrer-Köhler (1986) +1 other reference
  • Rhineland-Palatinate
    • Altenkirchen
      • Kirchen (Sieg)
        • Niederfischbach
Schnorrer-Köhler (1989) +1 other reference
Greece
  • Attica
    • East Attica
      • Lavreotiki
        • Km 3
          • Kaminiza mines
Rieck et al. (2022)
Italy
  • Friuli Venezia Giulia
    • Udine Province
Sylvano IOB Collection
      • Forni Avoltri
EDX analysis by Italo Campostrini +1 other reference
South Africa
  • Northern Cape
    • Namakwa District Municipality
Cairncross (2004)
Switzerland
  • Valais
    • Sierre
      • Anniviers
        • Saint-Luc
Ansermet (2012) +2 other references
Quick NavTopAbout Cualstibite-1MUnique IdentifiersClassification Physical Properties Chemistry Crystallography X-Ray Powder DiffractionFirst Recorded Occurrence SynonymsOther LanguagesCommon AssociatesOther InformationInternet Links References Localities Locality List
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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