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Ganophyllite

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Big Photo

Valgraveglia Mine (Gambatesa Mine), Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy
© O. Dziallas

Show Ganophyllite Photos (26)



Formula:
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
 · 8H
 
2
O
System:MonoclinicHardness:4 - 4½
Member of:Ganophyllite Group
Name:From the Greek for "luster" and "leaf," in allusion to the high luster on cleavage surfaces.


Ganophyllite Group. The potassium analogue of Eggletonite.

Classification of Ganophyllite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/H.17-60
Nickel-Strunz 10th (pending) edition ID:9.EG.30

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings
Dana 8th edition ID:74.1.2.1

74 : PHYLLOSILICATES Modulated Layers
1 : Modulated Layers with joined islands
Hey's CIM Ref.:16.16.9

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
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Type Occurrence of Ganophyllite

Type Locality:Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden
Year of Discovery:1890

Physical Properties of Ganophyllite

Hardness (Mohs):4 - 4½

Crystallography of Ganophyllite

Crystal System:Monoclinic
Cell Parameters:a = 16.6Å, b = 27.13Å, c = 50.18Å
β = 93.96°
Ratio:a:b:c = 0.612 : 1 : 1.85
Unit Cell Volume:V 22,545.01 ų (Calculated from Unit Cell)

Optical Data of Ganophyllite

Type:Biaxial (-)
RI values: nα = 1.537 nβ = 1.611 nγ = 1.613
Maximum Birefringence:δ = 0.076

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

Chemical Properties of Ganophyllite

Formula:
(K,Na,Ca)
 
2
Mn
 
8
(Si,Al)
 
12
(O,OH)
 
32
 · 8H
 
2
O
Essential elements:H, K, Mn, O, Si
All elements listed in formula:Al, Ca, H, K, Mn, Na, O, Si
Common Impurities:Fe,Zn,Pb,Ca,Ba

Relationship of Ganophyllite to other Species

Member of:Ganophyllite Group
Other Members of Group:

- +
Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
 · 11H
 
2
O
Tamaite
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
 · 21H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
9.EG.05Cymrite
BaAl
 
2
Si
 
2
(O,OH)
 
8
 · H
 
2
O
9.EG.10Naujakasite
(Na,K)
 
6
(Fe
2+
 
,Mn
2+
 
,Ca)(Al,Fe)
 
4
Si
 
8
O
 
26
9.EG.10Manganonaujakasite
Na
 
6
(Mn
2+
 
,Fe
2+
 
)Al
 
4
Si
 
8
O
 
26
9.EG.15Dmisteinbergite
CaAl
 
2
Si
 
2
O
 
8
9.EG.20Kampfite
Ba
 
12
(Si
 
11
Al
 
5
)O
 
31
(CO
 
3
)
 
8
Cl
 
5
9.EG.25Strätlingite
Ca
 
2
Al
 
2
SiO
 
7
 · 8H
 
2
O
9.EG.25Vertumnite
Ca
 
4
Al
 
4
Si
 
4
O
 
6
(OH)
 
24
 · 3H
 
2
O
9.EG.30Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
 · 11H
 
2
O
9.EG.30Tamaite
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
 · 21H
 
2
O
9.EG.35Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.35Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
9.EG.40Franklinphilite
(K,Na)
 
4
(Mn,Zn,Mg,Fe)
 
48
(Si,Al)
 
72
(O,OH)
 
216
 · 6H
 
2
O
9.EG.40Lennilenapeite
K
 
6-7
(Mg,Mn,Fe,Zn)
 
48
(Si,Al)
 
72
(O,OH)
 
216
 · 16H
 
2
O
9.EG.40Parsettensite
K
 
1.2
Mn
 
8
(Si,Al)
 
12
O
 
26
(OH)
 
10
9.EG.40Stilpnomelane
(K,Ca,Na)(Fe
2+
 
,Mg,Al,Fe
3+
 
)
 
8
(Si,Al)
 
12
(O,OH)
 
36
 · nH
 
2
O
9.EG.45Latiumite
K
 
2
Ca
 
6
(Si,Al)
 
11
O
 
25
(SO
 
4
,CO
 
3
)
9.EG.45Tuscanite
(K(Ca,Na)
 
6
(Si,Al)
 
10
O
 
22
[SO
 
4
,CO
 
3
,(OH)
 
2
] · H
 
2
O
9.EG.50Jagoite
(Pb,Ca)
 
3
FeSi
 
3
O
 
10
(Cl,OH)
9.EG.55Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
9.EG.60Hyttsjöite
Pb
 
18
Ba
 
2
Ca
 
5
Mn
2+
2
Fe
3+
2
Si
 
30
O
 
90
Cl · 6H
 
2
O
9.EG.65Armbrusterite
K
 
5
Na
 
7
Mn
 
15
[(Si
 
9
O
 
22
)
 
4
](OH)
 
10
 · 4H
 
2
O
9.EG.70Britvinite
[Pb
 
7
(OH)
 
3
F(BO
 
3
)
 
2
(CO
 
3
)][Mg
 
4.5
(OH)
 
3
(Si
 
5
O
 
14
)]
9.EG.75Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
 · 5.5H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.16.1Kanonaite
Mn
3+
 
Al(SiO
 
4
)O
16.16.2Spessartine
Mn
2+
3
Al
 
2
(SiO
 
4
)
 
3
16.16.3Davreuxite
MnAl
 
6
Si
 
4
O
 
17
(OH)
 
2
16.16.4Sursassite
Mn
2+
2
Al
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
16.16.5Carpholite
Mn
2+
 
Al
 
2
(Si
 
2
O
 
6
)(OH)
 
4
16.16.6Kellyite
Mn
2+
2
Al(AlSiO
 
5
)(OH)
 
4
16.16.7Pennantite
Mn
2+
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
16.16.8Akatoreite
(Mn
2+
 
,Fe
2+
 
)
 
9
Al
 
2
(HSi
 
4
O
 
13
)
 
2
(OH)
 
6
16.16.10Mangano-arfvedsonite
[Na][Na
 
2
][Mn
2+
4
(Fe
3+
 
)]Si
 
8
O
 
22
(OH)
 
2
16.16.11Masutomilite
(K,Rb)(Li,Mn
3+
 
,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
16.16.13Howieite
Na(Fe,Mn)
 
10
(Fe,Al)
 
2
Si
 
12
O
 
31
(OH)
 
13
16.16.14Eggletonite
(Na,K,Ca)
 
2
(Mn,Fe)
 
8
(Si,Al)
 
12
O
 
29
(OH)
 
7
 · 11H
 
2
O
16.16.15Bannisterite
Ca
 
0.5
(K,Na)
 
0.5
(Mn,Fe,Zn)
 
10
(Si,Al)
 
16
O
 
38
(OH)
 
8
 · 5.5H
 
2
O
16.16.16Taneyamalite
(Na,Ca)(Mn,Mg,Fe)
 
12
Si
 
12
(O,OH)
 
44
16.16.17Zussmanite
K(Fe,Mg,Mn)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
16.16.18Coombsite
K(Mn,Fe,Mg)
 
13
(Si,Al)
 
18
O
 
42
(OH)
 
14
16.16.19Henritermierite
Ca
 
3
(Mn
3+
 
,Al)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
16.16.20Macfallite
Ca
 
2
(Mn
3+
 
,Al)
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
16.16.21Ottrélite
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
(SiO
 
4
)O(OH)
 
2
16.16.22Piemontite
{Ca
 
2
}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.16.23Okhotskite
Ca
 
2
(Mn
2+
 
,Mg)(Mn
3+
 
,Al,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
16.16.24Pumpellyite-(Mn2+)
Ca
 
2
(Mn
2+
 
,Mg)(Al,Mn
3+
 
,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
16.16.25Piemontite-(Sr)
{CaSr}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)

Other Names for Ganophyllite

Other Languages:
German:Ganophyllit
Russian:Ганофиллит
Simplified Chinese:辉叶石
Spanish:Ganophyllita

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 Ganophyllite

Reference List:

- +
Smith, M.L. and Frondel, C. (1968) The related layered minerals ganophyllite, bannisterite and stilpnomelane. Mineralogical Magazine: 36: 893-913.

Mineralogical Magazine: 50: 307-315.

Internet Links for Ganophyllite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Ganophyllite details from Handbook of Mineralogy (PDF)
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  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
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  • Rare and Unusual minerals at Mineralogical Research Company
    • Specimens:The following Ganophyllite specimens are currently listed for sale on minfind.com.
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    • Localities for Ganophyllite

    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.
    Australia
     
    • New South Wales
      • Yancowinna Co.
        • Broken Hill
    		www.crocoite.com/census/minerals/ganophyllite.xml.
    Canada
     
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
    China
     
    • Shaanxi Province
      • Ankang Prefecture
        • Ziyang Co.
    		Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
      • Hanzhong Prefecture
        • Xixiang Co.
    		Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
        • Zhenba Co.
    		Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    • Sichuan Province
      • Dazhou Prefecture
        • Wanyuan Co.
    		Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    Pingyi Wan (2002): China's Manganese Industry 20(3), 1-6
    Italy
     
    • Liguria
      • Genova and La Spezia Provinces
        • different municipalities
          • Tre Monti mining concession
    		Castellaro, F., Passarino, G. (2011): I minerali di Monte Alpe. Sezione dell'antica Concessione Tre Monti (La Spezia e Genova). Rivista Mineralogica Italiana. 4/2011, 214-224.
      • Genova Province
        • Ne
          • Graveglia Valley
    		Redazionale (2005): Sistematica ligure: resoconto 2005. Notiziario di Mineralogia del Ferrania Club, 19 , 3-5.
    No reference listed
    Antofilli, Borgo, Palenzona, 1985. I nostri minerali. Geologia e mineralogia in Liguria. Edizioni Melita, La Spezia.
            • Reppia
    		Rivista Mineralogica Italiana, (4), 131
      • La Spezia Province
        • Vara Valley
          • Borghetto Vara
    		Palenzona A., Di Giovanni F., Borgo E. (1988) - La miniera di Manganese di Cerchiara (SP) - Rivista Miner. Ital., Milano, fasc. 4, pp.209-218
    • Piedmont
      • Cuneo Province
        • Maira Valley
    		Piccoli, G. C., Maletto, G., Bosio, P., & Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo F. Eusebio - Alba, 607 pag.
      • Torino Province
        • Susa Valley
          • Cesana Torinese
    		Brizio, P., Ambrino, P., Ciriotti, M.E., Blass, G. (2010). L'affioramento a Mn, SiO, Fe, S di Roccia Rossa, Cesana, Torino. Micro (località) 1/2010, 313-328
    Japan
     
    • Honshu Island
      • Kanto Region
        • Saitama Prefecture
          • Hidaka
    		Alfredo Petrov specimen
        • Tokyo Prefecture
          • Nishi-Tama-gun
            • Okutama-cho
    		Bull. Kanagawa pref. Mus. (Nat. Sci.), 22, 25-32 (1993)
    [MinRec 32:419]
      • Tohoku Region
        • Fukushima Prefecture
          • Iwaki City
    		Mineralogical Journal Vol. 18 (1996) , No. 4 pp 155-160
        • Iwate Prefecture
          • Shimohei-gun
            • Yamada
    		Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
    • Shikoku Island
      • Kochi Prefecture
    		Smith, M.L. and Frondel, C. (1968) The related layered minerals ganophyllite, bannisterite and stilpnomelane. Mineralogical Magazine: 36: 893-913.; Alfredo Petrov collection; Okamoto collection (curated at the Geological Survey museum, Japan)
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
    Sweden
     
    • Värmland
      • Filipstad
    		K:Gatedal
    Kjell Gatedal
        • Persberg district
          • Pajsberg
    		GFF,(1890) 12, 586-598; Smith, M.L. and Frondel, C. (1968) The related layered minerals ganophyllite, bannisterite and stilpnomelane. Mineralogical Magazine: 36: 893-913.
    Dana 7:I:539.
    • Västmanland
      • Hällefors
        • Grythyttan
    		No reference listed
      • Lindesberg
        • Nyberg ore field
    		Kjell Gatedal
      • Norberg
    UK
     
    • Wales
      • Gwynedd (Caernarvonshire)
        • Lleyn Peninsula
          • Llanfaelrhys
            • Rhiw
    		Smith, M.L. and Frondel, C. (1968) The related layered minerals ganophyllite, bannisterite and stilpnomelane. Mineralogical Magazine: 36: 893-913.
    USA
     
    • Arkansas
      • Pulaski Co.
        • Little Rock
    • California
      • Santa Clara Co.
        • Diablo Range
          • Black Wonder District
            • East Foothills
    		Rogers, Austin Flint (1919b), An interesting occurrence of manganese minerals near San Jose, California: American Journal of Science, 4th. Series: 48: 446; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 192; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 410.
    • Maine
      • Aroostook Co.
        • T3 R9 WELS
    		King & Foord, 1994. Mineralogy of Maine, V. 1.
        • TD R2 WELS
    		Pavlides, Louis and Milton, Charles, 1962, Geology and Manganese Deposits of the Maple and Hovey Mountains Area, Aroostook County, Maine, U. S. Geological Survey Professional Paper 362, pp. 116 + plates.
    King & Foord, 1994. Mineralogy of Maine, V. 1.
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Smith, M.L. & Frondel, C: Min.Mag.:36:893-913 (1968); Hurlbut, C.S., Jr. & Baum, J.L.: Am. Min.:45:1137-1143 (1960); Palache(1935):114; Dunn(1995):Pt4:494.
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