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Cyanophyllite

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

Show Cyanophyllite Photos (9)
Formula:
(Cu,Al)
 
3
[(OH)
 
6
|Sb
5+
 
(OH)
 
6
]
System:MonoclinicHardness:2


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)

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:Al, 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,Zr,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
SbSb
 
2
O
 
6
(OH)
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 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, in press. (Abstract)

Internet Links for Cyanophyllite

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  • Raman and XRD data at RRUFF project
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    Localities for Cyanophyllite

    Hide Locality List
    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.
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    (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
        • Narbonne
          • 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
    		Ciriotti, M.E., Möckel, S., Blaβ, G., Bortolozzi, G. (2006). Cualstibite: ritrovamenti italiani. MICRO (UK report), 2006, 19-24.
    Slovakia
     
    • Banská Bystrica Region
      • Starohorské Mts
        • Špania Dolina ore belt
          • Špania Dolina (Urvölgy; Herrengrund)
    		GEODA,2007/III
    South Africa
     
    • Northern Cape Province
      • Namaqualand
    		Min Rec 35:4 pp289-317
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