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Fraipontite

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War Eagle Mine, Tecopa, Inyo Co., California, USA
© Brent Thorne

Show Fraipontite Photos (5)
Formula:
(Zn,Al)
 
3
[(OH)
 
4
|(Si,Al)
 
2
O
 
5
]
System:MonoclinicHardness:2½
This page provides mineralogical data about Fraipontite.

Classification of Fraipontite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/H.27-80
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.4

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers
Hey's CIM Ref.:16.12.16

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn
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Type Occurrence of Fraipontite

Type Locality:Vieille Montagne (Altenberg; Kelmisberg), Moresnet, Kelmis, Plombières-Vieille Montagne District, Verviers, Liège Province, Belgium
Year of Discovery:1927

Physical Properties of Fraipontite

Hardness (Mohs):2½

Crystallography of Fraipontite

Crystal System:Monoclinic
Cell Parameters:a = 5.34Å, b = 9.21Å, c = 14.12Å
β = 93.2°
Ratio:a:b:c = 0.58 : 1 : 1.533
Unit Cell Volume:V 693.36 ų (Calculated from Unit Cell)

Optical Data of Fraipontite

Type:Biaxial (-)
RI values: nα = 1.620 nβ = 1.624 nγ = 1.624
2V:Measured: 15° to 20°
Maximum Birefringence:δ = 0.004

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 Fraipontite

Formula:
(Zn,Al)
 
3
[(OH)
 
4
|(Si,Al)
 
2
O
 
5
]
Essential elements:H, O, Si, Zn
All elements listed in formula:Al, H, O, Si, Zn
Common Impurities:Fe,Cu,Mg,Ca,K

Relationship of Fraipontite 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.15Berthierine
(Fe,Fe,Mg)
 
2-3
(Si,Al)
 
2
O
 
5
(OH)
 
4
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.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:
16.12.1Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
16.12.2Slawsonite
(Sr,Ca)[Al
 
2
Si
 
2
O
 
8
]
16.12.3Brewsterite
16.12.4Celsian
Ba[Al
 
2
Si
 
2
O
 
8
]
16.12.5Paracelsian
Ba[Al
 
2
Si
 
2
O
 
8
]
16.12.6Cymrite
BaAl
 
2
Si
 
2
(O,OH)
 
8
·H
 
2
O
16.12.7Edingtonite
Ba[Al
 
2
Si
 
3
O
 
10
] · 4H
 
2
O
16.12.8Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
16.12.9Harmotome
(Ba
 
0.5
,Ca
 
0.5
,K,Na)
 
5
[Al
 
5
Si
 
11
O
 
32
] ·12H
 
2
O
16.12.10Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
16.12.11Balipholite
BaLiMg
 
2
Al
 
3
[(OH)
 
4
|Si
 
2
O
 
6
]
 
2
16.12.12Armenite
BaCa
 
2
Al
 
6
Si
 
9
O
 
30
·2H
 
2
O
16.12.13Wellsite
(Ba,Ca,K
 
2
)Al
 
2
Si
 
6
O
 
16
·6H
 
2
O
16.12.14Merlinoite
(K,Na)
 
5
(Ca,Ba)
 
2
Al
 
9
Si
 
23
O
 
64
·23H
 
2
O
16.12.15Anandite
(Ba,K)(Fe
2+
 
,Mg)
 
3
[(O,OH)
 
2
|(Si,Al,Fe)
 
4
O
 
10
]
16.12.17Sauconite
Na
 
0.3
Zn
 
3
(Si,Al)
 
4
O
 
10
(OH)
 
2
·4H
 
2
O
16.12.18Minehillite
(K,Na)
 
2-3
Ca
 
28
Zn
 
4
Al
 
4
Si
 
40
O
 
112
(OH)
 
16
16.12.19Hendricksite
K(Zn,Mg,Mn
2+
 
)
 
3
[(OH)
 
2
|AlSi
 
3
O
 
10
]
16.12.20Baileychlore
(Zn,Fe,Al,Mg)
 
6
(Si,Al)
 
4
O
 
10
(OH)
 
8

Other Names for Fraipontite

Synonyms:
Zinalsite
German names:
Fraipontit
Spanish names:
Fraipontita
Varieties:
Cuprian Fraipontite

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 Fraipontite

Reference List:American Mineralogist: 62: 175.

Internet Links for Fraipontite

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

    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
     
    • Tasmania
      • Zeehan district
        • Zeehan
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Austria
     
    • Carinthia
      • Gailtaler Alpen & Karnische Alpen Mts
        • Bleiberg District
          • Bad Bleiberg
    		G. Niedermayr: Carinthia II, 177./97.: 287 (1987)
    Belgium
     
    • Liège Province
      • Verviers
        • Plombières-Vieille Montagne District
          • Kelmis
            • Moresnet
    		Ann.Soc.géol.Belgique,(1927) 50, B106-B110
    Chile
     
    • Tarapacá Region
      • Iquique Province
        • Challacollo
    		maurzi
    Germany
     
    • North Rhine-Westphalia
      • Sauerland
        • Meschede
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
            • Kamareza Mines
    		No reference listed
    No reference listed
    No reference listed
    No reference listed
          • Sounion Area
            • Agia Varvara Mines (St Barbara Mines)
    		Lapis, 24, 7/8, (1999)
    Italy
     
    • Sardinia
      • Sassari Province
        • Porto Torres
    		Orlandi, P., & Gelosa, M. (2007). Argentiera della Nurra. I minerali di alterazione della miniera di sfalerite e galena argentifera. Rivista Mineralogica Italiana, 31 (1), 22-31.
    • Tuscany
      • Massa-Carrara Province
        • Apuan Alps
          • Carrara
    		S. Merlino & P. Orlandi (2001): Carraraite and zaccagnaite, two new minerals ..... Amer. Miner. 86, 1293-1301
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		No reference listed
    Spain
     
    • Catalonia
      • Lleida (Lérida)
        • La Cerdanya
    		Calvo, M., Viñals, J. & Triviño, A.: Zálesiíte, felsobanyaite and fraipontite, in a conglomerate in Prullans, La Cerdanya, Catalonia (Spain). Mineral Up, Vol. I, 3, 49-51
    Turkmenistan
     
    • Lebap Province
      • South Tien-Shan Mts
        • Kugitangtau Ridge
    		http://fadr.msu.ru/caves/malmin_e.html
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Caldbeck Fells
            • Roughton Gill
    		Pluth, J. J., Steele, I. M., Kampf, A. R. & Green, D. I. (2005): Redgillite, Cu6(OH)10(SO4)•H2O, a new mineral from Caldbeck Fells, Cumbria, England: description and crystal structure. Mineralogical Magazine, 69, 973-980.
      • North Yorkshire
        • North Pennines
          • Wensleydale
            • Redmire
    		BMS Database
    • Wales
      • Caerphilly (Mid Glamorgan; Monmouthshire)
        • Machen
    		Minerals of Machen Quarry, Plant & Jones, Journal of the Russell Society, Vol 6, Pt 1, 1995
    USA
     
    • Arizona
      • Cochise Co.
        • Dragoon Mts
          • Turquoise District (Courtland-Gleeson District)
            • Gleeson
              • Costello Mine group (Costello claims)
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 361; Foord, E.E., et al (1983), Cuprian fraipontite and sauconite from the Defiance-Silver Bill Mines, Gleeson, AZ, Min.Rec.: 14: 131-132.
    [var: Cuprian Fraipontite] Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 226, 361; Foord, E.E., et al (1983), Cuprian fraipontite and sauconite from the Defiance-Silver Bill mines, Gleeson, AZ, Min.Rec.: 14: 131-132.
      • Pinal Co.
        • Mammoth District
          • Tiger
            • St. Anthony deposit
    		ID Paul Hlava, New Mexico.
    • California
      • Inyo Co.
        • Tecopa
    		Mindat gallery
      • San Bernardino Co.
        • Clark Mts
    		[Mineralien Welt 1/93:44]
    • Nevada
      • Clark Co.
        • Goodsprings District
    		Rocks & Minerals 83:1 pp 65-69
      • Elko Co.
        • Bootstrap District
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Eureka Co.
        • Maggie Creek District
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Nye Co.
        • Lodi District
          • Quartz Mountain camp
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    		Cianciulli, J.: The Picking Table:36(1):27 (1995); Dunn(1995):Pt4:486.
    • New Mexico
      • Hidalgo Co.
        • San Simon District
    		NMBMMR New Mexico Mineral symposium (2003) pp. 8-9
      • Socorro Co.
    		Northrop, Minerals of New Mexico, 3rd Rev. ed., 1996
          • Bingham
    		Minerals of New Mexico 3rd ed.
    Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996)
    Mineral and/or Locality
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