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Ferrocarpholite

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Krásno, Horní Slavkov (Schlaggenwald), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
© 2007, JGW

Formula:
(Fe
2+
 
,Mg)Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
Hardness:5½


Carpholite-Ferrocarpholite Series and the Ferrocarpholite-Magnesiocarpholite Series.

Classification of Ferrocarpholite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/F.03-20
Nickel-Strunz 10th (pending) edition ID:9.DB.05

9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si2O6; Pyroxene-related minerals
Dana 8th edition ID:65.1.5.2

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
Hey's CIM Ref.:16.19.11

16 : Silicates Containing Aluminum and other Metals
19 : Aluminosilicates of Fe and Mg
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Type Occurrence of Ferrocarpholite

Type Locality:Tomata (Tomate), Sulawesi Tenggara Province (Southeast Sulawesi Province), Sulawesi Island (Celebes Island), Indonesia
Year of Discovery:1951

Physical Properties of Ferrocarpholite

Hardness (Mohs):5½

Optical Data of Ferrocarpholite

Type:Biaxial (-)
RI values: nα = 1.614 nβ = 1.630 nγ = 1.635
2V:Measured: 58° , Calculated: 56°
Maximum Birefringence:δ = 0.021

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Ferrocarpholite

Formula:
(Fe
2+
 
,Mg)Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
Essential elements:Al, Fe, H, O, Si
All elements listed in formula:Al, Fe, H, Mg, O, Si
Common Impurities:Ti,Mn

Relationship of Ferrocarpholite to other Species

Series:Forms a series with Carpholite (see here)
Forms a series with Magnesiocarpholite (see here)
Member of Group:
Carpholite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
9.DB.05Balipholite
BaLiMg
 
2
Al
 
3
[(OH)
 
4
|Si
 
2
O
 
6
]
 
2
9.DB.05Carpholite
Mn
2+
 
Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
9.DB.05Magnesiocarpholite
(Mg,Fe
2+
 
)Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
9.DB.05Potassiccarpholite
(K,[])(Li,Mn
2+
 
)
 
2
Al
 
4
[(OH)
 
4
 ׀ (F,OH)
 
4
 ׀ (Si
 
2
O
 
6
)
 
2
]
9.DB.05Vanadiocarpholite
Mn
2+
 
V
3+
 
Al[(OH)
 
4
|Si
 
2
O
 
6
]
9.DB.10Lorenzenite
Na
 
2
Ti
 
2
[O
 
3
|Si
 
2
O
 
6
]
9.DB.15Lintisite
LiNa
 
3
Ti
 
2
[O|Si
 
2
O
 
6
]
 
2
 · 2H
 
2
O
9.DB.20Kukisvumite
Na
 
6
ZnTi
 
4
Si
 
8
O
 
28
·4H
 
2
O
9.DB.20Manganokukisvumite
Na
 
6
MnTi
 
4
Si
 
8
O
 
28
·4H
 
2
O
9.DB.25Vinogradovite
(Na,Ca,K)
 
4
Ti
 
4
AlSi
 
6
O
 
23
(OH)·2H
 
2
O
9.DB.25Paravinogradovite
Na
 
1-2
(Ti,Fe
3+
 
)
 
4
[(OH)
 
4
|AlSi
 
3
O
 
10
|(Si
 
2
O
 
6
)
 
2
] · H
 
2
O
9.DB.30Nchwaningite
Mn
2+
2
[(OH)
 
2
|SiO
 
3
] · H
 
2
O
9.DB.35Plancheite
Cu
 
8
[(OH)
 
4
|Si
 
8
O
 
22
] · H
 
2
O
9.DB.40Shattuckite
Cu
 
5
[(OH)
 
2
|(SiO
 
3
)
 
4
]
9.DB.40UM2005-31-SiO:CuH
Cu
 
11
(SiO
 
4
)(OH)
 
18
·9H
 
2
O ?
9.DB.45Aerinite
Ca
 
5
(Fe
3+
 
,Al,Fe
2+
 
,Mg)(Al,Mg)
 
6
[HSi
 
12
O
 
36
(OH)
 
12
][(CO
 
3
)
 
1.2
(H
 
2
O)
 
12
]
Related Minerals - Hey's Index Grouping:

- +
16.19.1Indialite
Mg
 
2
Al
 
4
Si
 
5
O
 
18
16.19.2Cordierite
(Mg,Fe)
 
2
Al
 
4
Si
 
5
O
 
18
16.19.3Sekaninaite
(Fe,Mg)
 
2
Al
 
4
Si
 
5
O
 
18
16.19.4Ferrogedrite
☐[Fe
2+
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
16.19.5Staurolite
(Fe
2+
 
,Mg,Zn)
 
1.5-2
Al
 
9
[O
 
6
|(OH,O)
 
2
|(SiO
 
4
)
 
4
]
16.19.6Chloritoid
(Fe
2+
 
,Mg,Mn
2+
 
)Al
 
2
[O|(OH)
 
2
|SiO
 
4
]
16.19.7Amesite
Mg
 
2
Al[(OH)
 
4
|AlSiO
 
5
]
16.19.8Corundophilite
(Mg,Fe,Al)
 
6
(Si,Al)
 
4
O
 
10
(OH)
 
8
16.19.9Yoderite
Mg(Al,Fe
3+
 
)
 
3
[O|OH|(SiO
 
4
)
 
2
]
16.19.10Delessite
(Mg,Fe,Fe,Al)(Si,Al)
 
4
O
 
10
(O,OH)
 
8
16.19.12Magnesiocarpholite
(Mg,Fe
2+
 
)Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
16.19.13Chamosite
(Fe
2+
 
,Mg)
 
5
Al[(OH)
 
8
|AlSi
 
3
O
 
10
]
16.19.14Orthochamosite
(Fe,Mg,Fe)
 
5
Al(Si
 
3
Al)O
 
10
(OH,O)
 
8
16.19.15Berthierine
(Fe,Fe,Mg)
 
2-3
(Si,Al)
 
2
O
 
5
(OH)
 
4
16.19.16Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
(Si,Al)
 
2
O
 
5
(OH)
 
4
16.19.17Clinochlore
(Mg,Fe
2+
 
)
 
5
Al[(OH)
 
8
|AlSi
 
3
O
 
10
]
16.19.18Gedrite
☐[Mg
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
16.19.19Magnesiogedrite
16.19.20Diabantite
(Mg,Fe,Al)
 
6
(Si,Al)
 
4
O
 
10
(OH)
 
8
16.19.21Sudoite
(Mg,Fe
2+
 
)
 
2
Al
 
3
[(OH)
 
8
|AlSi
 
3
O
 
10
]
16.19.22Vermiculite
(Mg,Fe,Al)
 
3
(Al,Si)
 
4
O
 
10
(OH)
 
2
·4H
 
2
O
16.19.23Corrensite
(Mg,Fe)
 
9
(Si,Al)
 
8
O
 
20
(OH)
 
10
·nH
 
2
O

Other Names for Ferrocarpholite

Other Languages:
German:Ferrocarpholit
Russian:Феррокарфолит
Spanish:Ferrocarpholita

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 Ferrocarpholite

Reference List:de Roever, W.P. (1951) Ferrocarpholite, the hitherto unknown ferrous iron analogue of carpholite proper. American Mineralogist: 36: 736-745.

Goffé, B., Goffe-Urbango, G., and Saliot, P. (1973) Sur la présence d'une variété magnésienne de ferrocarpholite en Vanoise (Alpes francaises). Sasignification probable dans le métamorphisme alpin. Comptes rendu de l’Académie des sciences de Paris 277, Série D, 1965-1968.

Ferraris, G., Ivaldi, G., and Goffe, B. (1992) Structural study of a magnesian ferrocarpholite: are carpholites monoclinic? Neues Jahrbuch für Mineralogie, Monatshefte (1992): 8: 337-347.

American Mineralogist (1993): 78: 453-454.

Bertoldi, C., Dachs, E., Theye, T., Cemič, L., Behrens, H., and Amthauer, G. (2004b) Heat capacities of natural magnesio- and ferrocarpholite. European Journal of Mineralogy, Berichte der Deutschen Mineralogischen Gesellschaft, Beiheft No 1, 16, 14.

Bertoldi, C., Dachs, E., and Theye, T. (2006) Calorimetric data for naturally occurring magnesiocarpholite and ferrocarpholite. American Mineralogist: 91: 441-445.

Internet Links for Ferrocarpholite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Ferrocarpholite in the Natural History Museum (London) online catalogue
  • Ferrocarpholite details from Handbook of Mineralogy (PDF)
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    Localities for Ferrocarpholite

    (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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Horní Slavkov (Schlaggenwald)
    		Jeff Weissman / Photographic Guide to Mineral Species
    Germany
     
    • Saxony-Anhalt
      • Harz Mts
    		Lapis 15(7/8), 59-60 (1990)
    Greece
     
    • Crete (Kriti) Department
      • Crete (Kriti) Island
        • Lasithi Prefecture
          • Sitía
            • Rousa Eklissia (Roússa Ekklissia)
    		Eur. J. Mineral. , 1992, 4, pp. 487-507.
    Eur. J. Mineral. , 1992, 4, pp. 487-507.
        • Rethymnon Prefecture
    		Eur. J. Mineral. , 1992, 4, pp. 487-507.
    Indonesia
     
    • Sulawesi Island (Celebes Island)
      • Sulawesi Tenggara Province (Southeast Sulawesi Province)
    		Amer.Min.(1951) 36, 736-745
    Italy
     
    • Calabria
      • Cosenza Province
        • Mormanno
    		Busato S., Giampaolo C. 1983)- Ferrocarpholite from Mormanno (northern Calabria, Italy). Periodico di Mineralogia, Roma, pp. 403-426
    • Piedmont
      • Cuneo Province
        • Maira Valley
          • Acceglio
    		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, Ed., Alba (Cuneo) 607 pp.
      • Verbano-Cusio-Ossola Province
        • Ossola Valley
          • Montecrestese
    		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, Ed., Alba (Cuneo) 607 pp.
    • Tuscany
      • Grosseto Province
    		Eur. J. Mineral., 9, 859-873
    Spain
     
    • Andalusia
      • Almería
        • Sierra Alhamilla
          • Tabernas
    		B. Goffé et al. , Eur. J. Mineral. , 1996, 8, pp. 335-348.
      • Granada
        • Salobreña
          • Trevenque
    		Eur. J. Mineral. , 1989, 1, pp. 139-142..
    B. Goffé et al. , Eur. J. Mineral. , 1996, 8, pp. 335-348.
    J.M. Azanon and B. Goffé, Eur. J. Mineral., 1997, 9, pp. 1035-1051.
    Mineral and/or Locality
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