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Calcioursilite

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Formula:
Ca
 
4
(UO
 
2
)
 
4
(Si
 
2
O
 
5
)
 
5
(OH)
 
6
· 15H
 
2
O
Colour:Lemon yellow
Name:For chemical composition: Uranyl and calcium silicate
This page provides mineralogical data about Calcioursilite.

Classification of Calcioursilite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Nickel-Strunz 10th (pending) edition ID:9.AK.35

9 : SILICATES (Germanates)
A : Nesosilicates
K : Uranyl neso- and polysilicates
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Type Occurrence of Calcioursilite

Type Locality:Oktyabr'skoye U Deposit, Kyzyltyube-Sai, Khodzhent (Leninabad), Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad), Tajikistan
General Appearance of Type Material:Forms acicular crystals, spherulites and earthy masses.
Geological Setting of type material:Forms in granite-porphyry.

Physical Properties of Calcioursilite

Lustre:Earthy
Colour:Lemon yellow

Chemical Properties of Calcioursilite

Formula:
Ca
 
4
(UO
 
2
)
 
4
(Si
 
2
O
 
5
)
 
5
(OH)
 
6
· 15H
 
2
O
Simplified for copy/paste:Ca4(UO2)4(Si2O5)5(OH)6·15H2O
All elements listed in formula:Ca, H, O, Si, U

Relationship of Calcioursilite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AK.05Soddyite
(UO
 
2
)
 
2
SiO
 
4
· 2H
 
2
O
9.AK.10Cuprosklodowskite
Cu(UO
 
2
)
 
2
[HSiO
 
4
]
 
2
· 6H
 
2
O
9.AK.10Oursinite
(Co,Mg)(UO
 
2
)
 
2
[HSiO
 
4
]
 
2
· 6H
 
2
O
9.AK.10Sklodowskite
Mg(UO
 
2
)
 
2
[HSiO
 
4
]
 
2
· 5H
 
2
O
9.AK.15Boltwoodite
(K,Na)(UO
 
2
)[HSiO
 
4
] · 0.5H
 
2
O
9.AK.15Kasolite
Pb(UO
 
2
)[SiO
 
4
] · H
 
2
O
9.AK.15Natroboltwoodite
(H
 
3
O)(Na,K)UO
 
2
SiO
 
4
· H
 
2
O
9.AK.15β-Uranophane
Ca(UO
 
2
)
 
2
(HSiO
 
4
)
 
2
· 5H
 
2
O
9.AK.15Uranophane
Ca(UO
 
2
)
 
2
[HSiO
 
4
]
 
2
· 5H
 
2
O
9.AK.15Beta-Uranophane
9.AK.20Swamboite
UH
 
6
(UO
 
2
)
 
6
(SiO
 
4
)
 
6
· 30H
 
2
O
9.AK.25Haiweeite
Ca(UO
 
2
)
 
2
[Si
 
5
O
 
12
(OH)
 
2
] · 6H
 
2
O
9.AK.25Metahaiweeite
Ca(UO
 
2
)
 
2
Si
 
6
O
 
15
· nH
 
2
O
9.AK.25Ranquilite
9.AK.30Weeksite
K
 
2
(UO
 
2
)
 
2
(Si
 
5
O
 
13
) · 4H
 
2
O
9.AK.30Coutinhoite
Th
 
x
Ba
 
(1-2x)
(UO
 
2
)
 
2
Si
 
5
O
 
13
· (H
 
2
O)
 
1+y
(0 < x < 0.5 and 0 < y < (2+x))
9.AK.35Ursilite
(Mg,Ca)
 
4
(UO
 
2
)
 
4
(Si
 
2
O
 
5
)
 
5.5
(OH)
 
5
· 13H
 
2
O
9.AK.35Magnioursilite
Mg
 
4
(UO
 
2
)
 
4
(Si
 
2
O
 
5
)
 
5
(OH)
 
6
· 20H
 
2
O
9.AK.40Uranosilite
UO
 
3
· 7SiO
 
2

Other Names for Calcioursilite

Synonyms:
Calcium-ursilite
Other Languages:
German:Calcioursilit
Ca-ursilit
Spanish:Calcioursilita

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 Calcioursilite

Reference List:

- +
Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 106 (1977), 553

Internet Links for Calcioursilite

Search Engines:
  • Look for Calcioursilite on Google
  • Look for Calcioursilite images on Google
  • External Links:
  • Look for Calcioursilite on Webmineral
  • Look for Calcioursilite on Athena Mineralogy
  • Look for Calcioursilite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Fabre Minerals - search for Calcioursilite specimens
  • The Arkenstone - Fine Minerals
  • Calcioursilite specimens for sale - minfind.com
  • Buy from McDougall Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Find Calcioursilite on www.crystalclassics.co.uk
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • High-end worldwide specimens & outstanding customer service
  • Fine minerals from bisbeeborn.com
  • Buy from Dave Bunk Minerals
  • Localities for Calcioursilite

    (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.
    Tajikistan
     
    • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
      • Khodzhent (Leninabad)
        • Kyzyltyube-Sai
    ZVMO (1977) 106, 533; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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