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Cyanophyllite

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Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© Stephan Wolfsried

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Formula:
(Cu,Al)
 
3
(OH)
 
6
[Sb
5+
 
(OH)
 
6
]
System:MonoclinicHardness:2
Name:From the Greek for blue (κυανός) and a leaf (φύλλον), in allusion to the color and habit.


A rare secondary antimony mineral closely related to cualstibite (Kolitsch & Giester, 2007); note revised formula and crystallography.

Classification of Cyanophyllite

IMA status:Approved
Strunz 8th edition ID:4/F.12-10
Nickel-Strunz 10th (pending) edition ID:4.FM.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
Dana 8th edition ID:44.3.9.1

44 : ANTIMONATES
3 : Miscellaneous
Hey's CIM Ref.:7.13.8

7 : Oxides and Hydroxides
13 : Oxides of As, Sb and Bi
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Type Occurrence of Cyanophyllite

Type Locality:Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
Year of Discovery:1981

Physical Properties of Cyanophyllite

Hardness (Mohs):2

Crystallography of Cyanophyllite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 9.941Å, b = 8.899Å, c = 5.498Å
β = 102.88°
Ratio:a:b:c = 1.117 : 1 : 0.618
Unit Cell Volume:V 474.14 ų
Morphology:Tabular (001), with approximately triangular outline.
Twinning:Invariably twinned by non-merohedry.
Comment:SG P21/c; Kolitsch & Giester (2007)
X-Ray Powder Diffraction:
d-spacingIntensity
9.67 (6)
4.84 (10)
2.59 (6)
2.44 (5)

Optical Data of Cyanophyllite

Type:Biaxial (-)
RI values: nα = 1.640 nβ = 1.664 nγ = 1.675
2V:Measured: 67° , Calculated: 66°
Maximum Birefringence:δ = 0.035

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v moderate

Chemical Properties of Cyanophyllite

Formula:
(Cu,Al)
 
3
(OH)
 
6
[Sb
5+
 
(OH)
 
6
]
Essential elements:Cu, H, O, Sb
All elements listed in formula:Al, Cu, H, O, Sb

Relationship of Cyanophyllite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.FM.15Franconite
Na
 
2
Nb
 
4
O
 
11
 · 9H
 
2
O
4.FM.15Hochelagaite
(Ca,Na,Sr)(Nb,Ti,Si,Al)
 
4
O
 
11
 · 8H
 
2
O
4.FM.15Ternovite
(Mg,Ca)Nb
 
4
O
 
11
 · nH
 
2
O
4.FM.25Belyankinite
Ca
 
1-2
(Ti,Nb)
 
5
O
 
12
 · 9H
 
2
O (?)
4.FM.25Gerasimovskite
(Mn,Ca)(Nb,Ti)
 
5
O
 
12
 · 9H
 
2
O
4.FM.25Manganbelyankinite
(Mn,Ca)(Ti,Nb)
 
5
O
 
12
 · 9H
 
2
O
4.FM.30Silhydrite
3SiO
 
2
 · H
 
2
O
4.FM.35Cuzticite
Fe
3+
2
(TeO
 
6
) · 3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.13.1Arsenolite
As
 
2
O
 
3
7.13.2Claudetite
As
 
2
O
 
3
7.13.3Sénarmontite
Sb
 
2
O
 
3
7.13.4Valentinite
Sb
 
2
O
 
3
7.13.5Cervantite
Sb
3+
 
Sb
5+
 
O
 
4
7.13.6Stibiconite
7.13.7Bahianite
Al
 
5
Sb
 
3
O
 
14
(OH)
 
2
7.13.9Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
7.13.107.13.11Stibivanite
Sb
 
2
VO
 
5
7.13.12Bismite
Bi
 
2
O
 
3
7.13.13Sillénite
Bi
 
12
SiO
 
20

Other Names for Cyanophyllite

Synonyms:
IMA1980-065
Other Languages:

Other Information

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

References for Cyanophyllite

Reference List:

- +
Walenta, K. (1981): Cyanophyllit, ein neues Mineral aus der Grube Clara bei Oberwolfach im mittleren Schwarzwald. Chem. Erde, 40, 195-200. (in German).

American Mineralogist: 66: 1274.

Walenta, K. (1984): Cualstibit, ein neues Sekundärmineral aus der Grube Clara im mittleren Schwarzwald (BRD). Chem. Erde 43, 255-260. (in German) [with revised formula of cyanophyllite]

Walenta, K. (1999): Zur Formel des Cyanophyllits. Erzgräber, 13, 45-46.

U. Kolitsch and G. Giester (2007): A preliminary determination of the crystal structure of cyanophyllite and revision of its chemical formula. Mitt. Österr. Mineral. Ges. 153, 66. (Abstract)

Internet Links for Cyanophyllite

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    • Localities for Cyanophyllite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    France
     
    • Languedoc-Roussillon
      • Aude
        • Tuchan
          • Padern
    		Favreau G., Berbain C., Meisser N. (2003), Cyanophyllite et autres espèces rares de la mine du Tistoulet, Padern (Aude), Le Cahier des Micromonteurs, n°4, pp: 17-23
    • Lorraine
      • Vosges
        • Val-d'Ajol
    		Lheur C., Moreau F. (1994), Les minéralisations du filon du Bas Hérival près du Val d'Ajol (Vosges), Le Cahier des Micromonteurs, n°2, pp: 3-14
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Chemie der Erde,(1981) 40, 195-200; Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); KOLITSCH, U. (1997): Uranosphärit und weitere neue Mineralfunde von der Grube Clara im Schwarzwald. - Mineralien-Welt 8 (3), 18-26.
    • North Rhine-Westphalia
      • Sauerland
        • Iserlohn
          • Letmathe
    		SCHNORRER-KÖHLER, G. (1986): Neue Minerale von der Schlackenhalde der ehemaligen Zinkhütte Genna in Letmathe/Sauerland. Aufschluss 37, 55-67.
    • Rhineland-Palatinate
      • Siegerland
        • Niederfischbach
    		Schnorrer-Köhler, G. (1989): Die Minerale der Grube Fischbacher Werk bei Niederfischbach im Bergamtsbezirk Betzdorf/Siegerland. Aufschluss, 40, 75-94 ; Weiss: "Mineralfundstellen, Deutschland West", 1990
    Italy
     
    • Friuli Venezia Giulia
      • Udine Province
        • Forni Avoltri
    		EDX analysis by Italo Campostrini
        • Tolmezzo
    		Sylvano IOB Collection
    South Africa
     
    • Northern Cape Province
      • Namaqualand
    		Min Rec 35:4 pp289-317
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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