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Carlosturanite

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Big Photo

Auriol Mine, Sampeyre, Varaita Valley, Cuneo Province, Piedmont, Italy
© Maurice de Graaf

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Formula:
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
System:MonoclinicHardness:2½
Name:Named in honor of Professor Carlo Sturani (1938-1976), University of Torino, Torino, Italy.


See also Unnamed (Mg Silicate).

Classification of Carlosturanite

IMA status:Approved
Strunz 8th edition ID:8/H.27-190
Nickel-Strunz 10th (pending) edition ID:9.DJ.25

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
Dana 8th edition ID:67.1.2.1

67 : INOSILICATES Unbranched Chains with W > 2
1 : Unbranched Chains with W>2 with W=3
Hey's CIM Ref.:16.14.11

16 : Silicates Containing Aluminum and other Metals
14 : Aluminosilicates of Ti, Zr, Sn and Pb
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Type Occurrence of Carlosturanite

Type Locality:Auriol Mine, Sampeyre, Varaita Valley, Cuneo Province, Piedmont, Italy
Year of Discovery:1985

Physical Properties of Carlosturanite

Hardness (Mohs):2½

Crystallography of Carlosturanite

Crystal System:Monoclinic
Cell Parameters:a = 36.7Å, b = 9.41Å, c = 7.29Å
β = 101.1°
Ratio:a:b:c = 3.9 : 1 : 0.775
Unit Cell Volume:V 2,470.48 ų (Calculated from Unit Cell)

Optical Data of Carlosturanite

Type:Biaxial
Dispersion:r > v

Chemical Properties of Carlosturanite

Formula:
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
Essential elements:H, Mg, O, Si
All elements listed in formula:Al, Fe, H, Mg, O, Si, Ti
Common Impurities:Mn,Cr

Relationship of Carlosturanite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DJ.05Narsarsukite
Na
 
4
(Ti,Fe)
 
2
[Si
 
8
O
 
20
](O,OH,F)
 
2
9.DJ.10Laplandite-(Ce)
Na
 
4
CeTiPO
 
4
Si
 
7
O
 
18
 · 5H
 
2
O
9.DJ.15Caysichite-(Y)
Ca
 
2
Y
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
 · 4H
 
2
O
9.DJ.20Seidite-(Ce)
Na
 
4
(Ce,Sr)
 
2
Ti[(O,OH,F)
 
5
|Si
 
8
O
 
18
(OH)] · 5H
 
2
O
9.DJ.30Jonesite
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
(Si
 
3
O
 
9
)
 
2
(SiO
 
4
)
 
4
O
 
2
 · 6H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.14.1Zorite
Na
 
8
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
 · 14H
 
2
O
16.14.2Vinogradovite
(Na,Ca,K)
 
4
Ti
 
4
AlSi
 
6
O
 
23
(OH) · 2H
 
2
O
16.14.3Rhönite
Ca
 
2
(Mg,Fe
2+
 
,Fe
3+
 
,Ti)
 
6
[O
 
2
|(Si,Al)
 
6
O
 
18
]
16.14.4Kaersutite
{Na}{Ca
 
2
}{Mg
 
4
Ti}(Al
 
2
Si
 
6
O
 
22
)(OH)O
16.14.5Ferrokaersutite
{Na}{Ca
 
2
}{Fe
2+
4
Ti}(Al
 
2
Si
 
6
O
 
22
)(OH)O
16.14.6Jonesite
Ba
 
4
(K,Na)
 
2
Ti
 
4
Al
 
2
(Si
 
3
O
 
9
)
 
2
(SiO
 
4
)
 
4
O
 
2
 · 6H
 
2
O
16.14.7Lourenswalsite
(K,Ba)
 
2
(Ti,Mg,Ca,Fe)
 
4
(Si,Al,Fe)
 
6
O
 
14
(OH)
 
12
16.14.8Labuntsovite-Mn
Na
 
4
K
 
4
(Ba,K)
 
2
Mn
2+
 
(Ti,Nb)
 
8
(Si
 
4
O
 
12
)
 
4
(O,OH)
 
8
 · 10-12H
 
2
O
16.14.9Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
((Si,Al,Fe
3+
 
)O
 
4
)
 
3
16.14.10Ellenbergerite
Mg
 
6
(Mg,Ti,Zr,◻)
 
2
(Al,Mg)
 
6
Si
 
8
O
 
28
(OH)
 
10
16.14.12Eakerite
Ca
 
2
SnAl
 
2
Si
 
6
O
 
18
(OH)
 
2
 · 2H
 
2
O
16.14.13Plumalsite
Pb
 
4
Al
 
2
(SiO
 
3
)
 
7
16.14.14Wickenburgite
CaPb
 
3
Al
 
2
Si
 
10
O
 
24
(OH)
 
6
16.14.15Maricopaite
Pb
 
7
Ca
 
2
(Si,Al)
 
48
O
 
100
 · 32H
 
2
O
16.14.16Epidote-(Pb)
{CaPb}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.14.17Burckhardtite
Pb
 
2
(Fe
3+
 
,Mn
3+
 
)Te
4+
 
(AlSi
 
3
O
 
10
)O
 
2
(OH)
 
2
 · H
 
2
O
16.14.18Mathewrogersite
Pb
 
7
FeAl
 
3
GeSi
 
12
O
 
36
(OH,H
 
2
O)
 
6

Other Names for Carlosturanite

Synonyms:
IMA1984-009
Other Languages:
German:Carlosturanit
Spanish:Carlosturanita

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 Carlosturanite

Reference List:

- +
American Mineralogist: 70: 767-781.

Internet Links for Carlosturanite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Carlosturanite details from Handbook of Mineralogy (PDF)
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    • Localities for Carlosturanite

    Hide Locality List
    (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.
    Italy
     
    • Piedmont
      • Cuneo Province
        • Po Valley
          • Crissolo
            • Pian Melzé (Pian della Regina)
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
        • Varaita Valley
          • Sampeyre
    		Amer.Min.(1985) 70, 767-781
      • Torino Province
        • Sesia-Lanzo zone
          • Lanzo Valley
            • Viù Valley
              • Viù
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    Sweden
     
    • Småland
      • Jönköping
        • Månsarp
    		MinMag (1986) 50, 675-679
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