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Berthierine

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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada
© 2005 DM

Show Berthierine Photos (9)
Formula:
(Fe,Fe,Mg)
 
2-3
(Si,Al)
 
2
O
 
5
(OH)
 
4
System:HexagonalColour:Green
Hardness:2½


A member of the Kaolinite-Serpentine group.

Classification of Berthierine

IMA status:Approved
Strunz 8th edition ID:8/H.27-70
Nickel-Strunz 10th (pending) edition ID:9.ED.15

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets
Dana 8th edition ID:71.1.2c.2

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
Hey's CIM Ref.:16.19.15

16 : Silicates Containing Aluminum and other Metals
19 : Aluminosilicates of Fe and Mg
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Physical Properties of Berthierine

Lustre:Pearly
Colour:Green
Streak:Greenish white
Hardness (Mohs):2½

Crystallography of Berthierine

Crystal System:Hexagonal

Optical Data of Berthierine

Type:Biaxial
RI values: nα = 1.620 nγ = 1.650
Maximum Birefringence:δ = 0.030

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

Chemical Properties of Berthierine

Formula:
(Fe,Fe,Mg)
 
2-3
(Si,Al)
 
2
O
 
5
(OH)
 
4
Essential elements:Fe, H, O, Si
All elements listed in formula:Al, Fe, H, Mg, O, Si

Relationship of Berthierine to other Species

Member of:Serpentine Group
Related Minerals - Nickel-Strunz Grouping):
9.ED.05Dickite
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
9.ED.05Kaolinite
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
9.ED.05Nacrite
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
9.ED.05Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
(Si,Al)
 
2
O
 
5
(OH)
 
4
9.ED.10Halloysite
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
9.ED.10Hisingerite
Fe
3+
2
Si
 
2
O
 
5
(OH)
 
4
·2H
 
2
O
9.ED.10Halloysite-7Å
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
9.ED.10Halloysite-10Å
Al
 
2
Si
 
2
O
 
5
(OH)
 
4
·2H
 
2
O
9.ED.15Amesite
Mg
 
2
Al[(OH)
 
4
|AlSiO
 
5
]
9.ED.15Antigorite
(Mg,Fe
2+
 
)
 
3
[(OH)
 
4
|Si
 
2
O
 
5
]
9.ED.15Brindleyite
(Ni,Mg,Fe)
 
2
Al(Si,Al)O
 
5
(OH)
 
4
9.ED.15Caryopilite
(Mn,Mg)
 
3
Si
 
2
O
 
5
(OH)
 
4
9.ED.15Chrysotile
Mg
 
3
Si
 
2
O
 
5
(OH)
 
4
9.ED.15Cronstedtite
Fe
2+
2
Fe
3+
 
[(Si,Fe
3+
 
)
 
2
O
 
5
](OH)
 
4
9.ED.15Fraipontite
(Zn,Al)
 
3
[(OH)
 
4
|(Si,Al)
 
2
O
 
5
]
9.ED.15Greenalite
Fe
 
2-3
Si
 
2
O
 
5
(OH)
 
4
9.ED.15Kellyite
Mn
2+
2
Al[(OH)
 
4
|AlSiO
 
5
]
9.ED.15Lizardite
Mg
 
3
[(OH)
 
4
|Si
 
2
O
 
5
]
9.ED.15Manandonite
LiAl
 
4
Si
 
3
BO
 
10
(OH)
 
6
9.ED.15Népouite
(Ni,Mg)
 
3
Si
 
2
O
 
5
(OH)
 
4
9.ED.15Pecoraite
Ni
 
3
[(OH)
 
4
|Si
 
2
O
 
5
]
9.ED.20Allophane
(Al
 
2
O
 
3
)(SiO
 
2
)
 
1.3-2
·2.5-3H
 
2
O
9.ED.20Chrysocolla
(Cu,Al)
 
2
H
 
2
Si
 
2
O
 
5
(OH)
 
4
·nH
 
2
O
9.ED.20Imogolite
Al
 
2
SiO
 
3
(OH)
 
4
9.ED.20Neotocite
(Mn,Fe,Mg)SiO
 
3
·H
 
2
O
9.ED.25Bismutoferrite
Fe
3+
2
Bi[OH|(SiO
 
4
)
 
2
]
9.ED.25Chapmanite
Fe
3+
2
Sb
3+
 
[OH|(SiO
 
4
)
 
2
]
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
16.19.11Ferrocarpholite
(Fe
2+
 
,Mg)Al
 
2
[(OH)
 
4
|Si
 
2
O
 
6
]
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
16.19.16Odinite
(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 Berthierine

Synonyms:
K-type ChamositeSeptechamosite
German names:
Septechamosit
Spanish names:
Septechamosita
Varieties:
Titanian Berthierine

Polytypes for Berthierine

Polytypes:
Berthierine-1HBerthierine-1M

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 Berthierine

Reference List:Mineralogical Magazine: 29: 502-525.

Arma, M., Fleet, ME., and BArnett, R.L. (1985): Titanian berthierine: a Ti-rich serpentine group mineral from the Picton ultramafic dyke, Ontario. Canadian Mineralogist: 23: 213-220.

Bertoldi, C., Dachs, E., Cemič, L., Theye, T., Wirth, R., and Groger, W. (2005) The heat capacity of the serpentine-subgroup mineral berthierine (Fe2.5Al0.5)[Si1.5Al0.5 O5](OH)4. Clays and Clay Minerals: 53(4): 381-389.

Internet Links for Berthierine

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  • Raman and XRD data at RRUFF project
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  • Search for Berthierine in the Natural History Museum (London) online catalogue
  • Berthierine details from Handbook of Mineralogy (PDF)
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    Localities for Berthierine

    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.
    Australia
     
    • Western Australia
      • Windarra Mine
        • South Windarra
    		Mineralogical Magazine, June 1975, Vol. 40, pp. 200-202.
    Brazil
     
    • Southeast Region
      • Minas Gerais
        • Poços de Caldas
    		Atencio et al. (1999) Can. Min. 37, 91-98.
    Bulgaria
     
    • Sofiya (Sofia) Oblast
    Canada
     
    • New Brunswick
      • York Co.
        • Lake George
    		[MinRec 1991]
    • Ontario
      • Cochrane District
        • Kidd Township
          • Timmins
    		Jiang, Peacor, & Slack. Clays and Clay Minerals 40:501-514
    [var: Titanian Berthierine] Canadian Mineralogist: 23: 213-220.
    • Québec
      • Jacques Cartier Co.
        • Montréal
    		Tarassoff collection
      • Rouville Co.
        • Mont Saint-Hilaire
    		Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Žďár nad Sázavou
    		Russian Geology and Geophysics 34, no.12: (1993).125-131. 737
    France
     
    • Auvergne
      • Haute-Loire
        • Brioude - Massiac area
          • Mercoeur
    		No reference listed
    • Brittany
      • Finistère
        • Poullaouen
    		R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
    • Pays de Loire
      • Loire-Atlantique
        • Saint-Aubin-des-Châteaux
    		Moëlo, Y., Gloaguen, E., Lulzac, Y. (2006): III. Les minéraux de Saint-Aubin. Le Cahier des Micromonteurs, 1/2006, 13-25
    Germany
     
    • Bavaria
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
              • Hagendorf
    		http://www.berthold-weber.de/h_miner.htm
    • Thuringia
      • Wurzbach
        • Weitisberga
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Hungary
     
    • Baranya Co.
      • Mecsek Mts.
        • Pécs
    • Veszprém Co.
      • Bakony Mts.
        • Halimba
    		Mineral Species of Hungary, 2005
    Italy
     
    • Piedmont
      • Torino Province
        • Canavese District
          • Léssolo
            • Cálea
    		Le miniere di Brosso (2001)-Italo Campostrini- ed. Museo Regionale Torino
    • Sardinia
      • Carbonia-Iglesias Province
        • Fluminimaggiore
          • Oridda Valley
    		Olmi, F., Sabelli, C., Santucci, A. & Brizzi, G. (1995): Les minéraux rares de Sardaigne. Le Règne Minéral, 4/1995, 4-25
      • Nuoro Province
        • Gadoni
    		Stara, P., Rizzo, R., Sabelli, C., Ibba, A. (1999): I minerali di Funtana Raminosa. Rivista Mineralogica Italiana, 1/1999, 10-27.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Saitama Prefecture
          • Chichibu-gun
            • Ohtaki-mura
              • Nakatsugawa
    		The Mineral Species of Japan (5th ed) Matsubara
    New Zealand
     
    • South Island
      • Canterbury
    Gejing Li et al. : "Solid solution in the celadonite family: The new minerals ferroceladonite and and ferroaluminoceladonite", American Mineralogist, Volume 82, pages 503–511, 1997
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    		www.koeln.netsurf.de/~w.steffens/khib.htm
    Spain
     
    • Andalusia
      • Córdoba
        • Sierra Morena
          • Sierra Albarrana
            • El Cabril
    		Maria del Mar Abad-Ortega and Fernando Nieto, Eur. Journ. Mineral. , 1995, 7, pp. 363-367.
    Sweden
     
    • Södermanland
      • Eskilstuna
    USA
     
    • California
      • Santa Clara Co.
        • Diablo Range
          • Mount Hamilton
    • Colorado
      • San Juan Co.
        • Elk Park
    		Minerals of Colorado (1997) Eckels, E. B.
    • Kentucky
      • Rockcastle Co.
    • Wyoming
      • Albany Co.
    		Rocks & Minerals 76:382
    Mineral and/or Locality
    Google
     
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