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Calcio-Olivine

Big Photo

Caspar quarry, Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.), Bellerberg volcano, Ettringen, Mayen, Eifel Mts, Rhineland-Palatinate, Germany
© C.H.M.-Schäfer

Show Calcio-Olivine Photos (2)
Formula:
Ca
 
2
[SiO
 
4
]
Name:In allusion to its composition, containing dominant calcium, and its relationship to the olivine series.
Dimorph of:Larnite


Olivine Group. The calcium analogue of Fayalite, Forsterite, and Tephroite. The low-temperature, orthorhombic polymorph of Larnite.

May occur as the result of the conversion of Larnite, which is metastable below 520° C.

Classification of Calcio-Olivine

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered" 1877
Strunz 8th edition ID:8/A.07-40
Nickel-Strunz 10th (pending) edition ID:9.AD.10

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
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Type Occurrence of Calcio-Olivine

Type Locality:Lakargi Mt., Verkhnechegemskiy volcanic structure, Kabardino-Balkarian Republic, Northern Caucasus Region, Russia

Chemical Properties of Calcio-Olivine

Formula:
Ca
 
2
[SiO
 
4
]
Essential elements:Mg, O, Si
All elements listed in formula:Ca, O, Si

Relationship of Calcio-Olivine to other Species

Member of Group:
Olivine Group:
Related Minerals - Nickel-Strunz Grouping):

- +
9.AD.05Larnite
Ca
 
2
[SiO
 
4
]
9.AD.15Merwinite
Ca
 
3
Mg[SiO
 
4
]
 
2
9.AD.20Bredigite
Ca
 
7
Mg[SiO
 
4
]
 
4
9.AD.25Andradite
Ca
 
3
Fe
3+
2
[SiO
 
4
]
 
3
9.AD.25Almandine
Fe
2+
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
[SiO
 
4
]
 
3
9.AD.25Goldmanite
Ca
 
3
(V
3+
 
,Al,Fe
3+
 
)
 
2
[SiO
 
4
]
 
3
9.AD.25Grossular
Ca
 
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Henritermierite
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
9.AD.25Hibschite
Ca
 
3
Al
 
2
[(OH)
 
6-1
|(SiO
 
4
)
 
1.5-2.5
]
9.AD.25Hydroandradite
Ca
 
3
Fe
3+
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
9.AD.25Katoite
Ca
 
3
Al
 
2
[(OH)
 
8-6
|(SiO
 
4
)
 
1-1.5
]
9.AD.25Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
[(Si,Al,Fe
3+
 
)O
 
4
]
 
3
9.AD.25Knorringite
Mg
 
3
Cr
 
2
[SiO
 
4
]
 
3
9.AD.25Majorite
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
[SiO
 
4
]
 
3
9.AD.25Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
)O
 
4
]
 
3
 (?)
9.AD.25Pyrope
Mg
 
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
,Fe
2+
 
)O
 
4
]
 
3
9.AD.25Spessartine
Mn
2+
3
Al
 
2
[SiO
 
4
]
 
3
9.AD.25Uvarovite
Ca
 
3
Cr
 
2
[SiO
 
4
]
 
3
9.AD.25Wadalite
Ca
 
6
(Al,Mg)
 
4
[Cl
 
3
|O
 
4
|{(Si,Al,Fe
3+
 
)O
 
4
}
 
3
]
9.AD.25Holtstamite
Ca
 
3
(Al,Mn
3+
 
)
 
2
(SiO
 
4
)
 
2
(OH)
 
4
9.AD.25IMA2009-029
Ca
 
3
Zr
 
2
(Fe
3+
2
Si)O
 
12
9.AD.25IMA2009-033
Ca
 
3
Sn
 
2
(Fe
 
2
Si)O
 
12
9.AD.25IMA2009-026
(Mn
2+
 
,Ca)
 
3
V
3+
2
(SiO
 
4
)
 
3
9.AD.30Coffinite
(U,Th)[(OH)
 
4x
|(SiO
 
4
)
 
1-x
]
9.AD.30Hafnon
(Hf,Zr)[SiO
 
4
]
9.AD.30Thorite
(Th,U)[SiO
 
4
]
9.AD.30Thorogummite
(Th,U)[(OH)
 
4x
|(SiO
 
4
)
 
1-x
]
9.AD.30Zircon
Zr[SiO
 
4
]
9.AD.30Stetindite
CeSiO
 
4
9.AD.35Huttonite
Th[SiO
 
4
]
9.AD.35Tombarthite-(Y)
Y
 
4
[HSiO
 
4
]
 
3
9.AD.40Eulytine
Bi
 
4
[SiO
 
4
]
 
3
9.AD.45Reidite
Zr[SiO
 
4
]

Other Names for Calcio-Olivine

Synonyms:
gamma-Ca2SiO4Lime-Olivine
Other Languages:
German:Calcio-Olivin

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 Calcio-Olivine

Reference List:Acta Crystallographica (1964): 17.

American Mineralogist (1966): 51: 1766.

Hentschel, G. (1987), Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage).

Zadov, A.E. et al., Doklady Earth Science 423A, 1431 (2008)

Zadov A.E., Gazeyev V.M., Pertsev N.N., Gurbanov A.G., Gobechiya E.R., Yamnova N.A., Chukanov N.V. (2008) Calcioolivine gamma-Ca2SiO4 - an old and new mineral species. - ZVMO, N6, 46-57 (in Russ.).

Internet Links for Calcio-Olivine

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    Localities for Calcio-Olivine

    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.
    (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.
    Germany
     
    • Rhineland-Palatinate
      • Eifel Mts
        • Daun
          • Üdersdorf
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise Verlag, München (2. Auflage), 1987
        • Mayen
          • Ettringen
            • Bellerberg volcano
              • Ettringer Bellerberg Mt. (Bellberg Mt.; Bellenberg Mt.; Billenberg Mt.; Boilenberg Mt.)
    		Hentschel, G., Die Mineralien der Eifelvulkane, Weise, München (2. Auflage), 1987
              • Southern lava flow
                • Mayener Feld
    		Rüdinger, B.; Tillmanns, E. Hentschel, G. (1993): Bellbergite – a New Mineral with the Zeolite Structure Type EAB, Mineralogy and Petrology 48, 147-152
    Russia
     
    • Northern Caucasus Region
      • Kabardino-Balkarian Republic
        • Verkhnechegemskiy volcanic structure
    		Zadov, A.E. et al., Doklady Earth Science 423A, 1431 (2008); Zadov A.E., Gazeyev V.M., Pertsev N.N., Gurbanov A.G., Gobechiya E.R., Yamnova N.A., Chukanov N.V. (2008) Calcioolivine gamma-Ca2SiO4 - an old and new mineral species. - ZVMO, N6, pp. 46-57 (in Rus.).
    USA
     
    • Texas
      • Culberson Co.
        • Apache Peak area
    		Bridge, T. (1966) Am. Min. 51, 1766-1774.
    Mineral and/or Locality
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