Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Fukalite

Big Photo

Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
© hamster@aon.at

Formula:
Ca
 
4
[CO
 
3
|(HSiO
 
4
)
 
2
]
System:OrthorhombicColour:pale brown, white
Hardness:4
Name:Named after its discovery locality.
This page provides mineralogical data about Fukalite.

Classification of Fukalite

IMA status:Approved 1976
Strunz 8th edition ID:8/B.22-80
Nickel-Strunz 10th (pending) edition ID:9.DQ.05

9 : SILICATES (Germanates)
D : Inosilicates
Q : Unclassified inosilicates
Dana 8th edition ID:78.4.3.1

78 : Unclassified Silicates
4 :
Hey's CIM Ref.:17.4.5

17 : Silicates Containing other Anions
4 : Silicates with carbonates
mindat.org URL:http://www.mindat.org/min-1619.html
Please feel free to link to this page.

Type Occurrence of Fukalite

Type Locality:Fuka mine, Bitchu-cho (Bicchu-cho), Takahashi, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
Year of Discovery:1977

Physical Properties of Fukalite

Colour:pale brown, white
Streak:white
Hardness (Mohs):4

Crystallography of Fukalite

Crystal System:Orthorhombic
Cell Parameters:a = 5.48Å, b = 3.78Å, c = 23.42Å
Ratio:a:b:c = 1.45 : 1 : 6.196
Unit Cell Volume:V 485.13 ų (Calculated from Unit Cell)

Optical Data of Fukalite

Type:Biaxial (+/-)
RI values: nα = 1.595 nβ = 1.605 nγ = 1.626
2V:Measured: 90° , Calculated: 70°
Maximum Birefringence:δ = 0.031

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 Fukalite

Formula:
Ca
 
4
[CO
 
3
|(HSiO
 
4
)
 
2
]
Essential elements:C, Ca, H, O, Si
All elements listed in formula:C, Ca, H, O, Si
Common Impurities:Al,Fe,Mg,Na,K,P

Relationship of Fukalite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.DQ.10Tacharanite
Ca
 
12
Al
 
2
Si
 
18
O
 
51
·18H
 
2
O
9.DQ.15Oyelite
Ca
 
10
Si
 
8
B
 
2
O
 
29
·12.5H
 
2
O
9.DQ.20Denisovite
Ca
 
2
(K,Na)Si
 
3
O
 
8
(F,OH)
 
2
9.DQ.25Tiettaite
(Na,K)
 
17
FeTiSi
 
16
O
 
29
(OH)
 
30
·2H
 
2
O
Related Minerals - Hey's Index Grouping:
17.4.1Tilleyite
Ca
 
5
[(CO
 
3
)
 
2
|Si
 
2
O
 
7
]
17.4.2Spurrite
Ca
 
5
[CO
 
3
|(SiO
 
4
)
 
2
]
17.4.3Paraspurrite
Ca
 
5
[CO
 
3
|(SiO
 
4
)
 
2
]
17.4.4Scawtite
Ca
 
7
Si
 
6
(CO
 
3
)O
 
18
·2H
 
2
O
17.4.6Meionite
Ca
 
4
[CO
 
3
|(Al
 
2
Si
 
2
O
 
8
)
 
3
]
17.4.7Cancrinite
Na
 
6
Ca
 
2
[(CO
 
3
)
 
2
|Al
 
6
Si
 
6
O
 
24
] · 2H
 
2
O
17.4.8Carletonite
KNa
 
4
Ca
 
4
Si
 
8
O
 
18
(CO
 
3
)
 
4
(OH,F)·H
 
2
O
17.4.9Iimoriite-(Y)
Y
 
2
[CO
 
3
|SiO
 
4
]
17.4.10Kainosite-(Y)
Ca
 
2
(Y,Ce)
 
2
Si
 
4
O
 
12
CO
 
3
·H
 
2
O
17.4.11Caysichite-(Y)
Y
 
2
(Ca,Gd)
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
·4H
 
2
O
17.4.12Lepersonnite-(Gd)
CaO(Gd,Dy)
 
2
O
 
3
·24UO
 
3
·8CO
 
2
·4SiO
 
2
·60H
 
2
O
17.4.13Ashburtonite
Pb
 
4
Cu
 
4
[(OH)
 
3
|Cl|(HCO
 
3
)
 
4
|Si
 
4
O
 
12
] · H
 
2
O
17.4.14Surite
Pb(Pb,Ca)(CO
 
3
)
 
2
(Al,Fe,Mg)
 
2
(Si,Al)
 
4
O
 
10
(OH)
 
2
17.4.15Tundrite-(Ce)
Na
 
2
Ce
 
2
TiO
 
2
(SiO
 
4
)(CO
 
3
)
 
2
17.4.16Tundrite-(Nd)
Na
 
3
(Nd,La)
 
4
(Ti,Nb)
 
2
(SiO
 
4
)
 
2
(CO
 
3
)
 
3
O
 
4
(OH)·2H
 
2
O

Other Names for Fukalite

Synonyms:
IMA1976-003
German names:
Fukalit
Spanish names:
Fukalita

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 Fukalite

Reference List:American Mineralogist: 63: 793.

Internet Links for Fukalite

Search Engines:
  • Look for Fukalite on Google
  • Look for Fukalite images on Google
    • External Links:
  • Look for Fukalite on Webmineral
  • Look for Fukalite on Athena Mineralogy
  • Look for Fukalite on Wikipedia
  • Look for Fukalite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Fukalite in the Natural History Museum (London) online catalogue
  • Fukalite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • The Arkenstone - Fine Minerals
  • Search for Fukalite on minvision.com
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Buy from David K Joyce minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Lapis Mineral Magazin
  • Wilensky Fine Minerals
  • Fabre Minerals - search for Fukalite specimens
  • rare and unusual minerals mainly crystallized
  • e-Rocks - Mineral Auctions and Sales
  • High-end worldwide specimens & outstanding customer service
  • Rare and Unusual minerals at Mineralogical Research Company
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Fukalite

    (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.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Hiroshima prefecture
    		Alfredo Petrov - alfredo@mindat.org
        • Okayama Prefecture
          • Takahashi
            • Bitchu-cho (Bicchu-cho)
    		Mineralogical Journal of Japan (1977): 8, 374-381.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.