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Ferroglaucophane

Formula:
[ ][Na
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
System:MonoclinicColour:Grey to lavender-blue.
Lustre:VitreousHardness:5 - 6
Name:For its relationship to glaucophane.

Classification of Ferroglaucophane

IMA status:Approved
Strunz 8th edition ID:8/F.08-20
Nickel-Strunz 10th (pending) edition ID:9.DE.25

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
Hey's CIM Ref.:16.18.2

16 : Silicates Containing Aluminum and other Metals
18 : Aluminosilicates of Fe and alkalis
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Type Occurrence of Ferroglaucophane

Type Locality:Herin mine, Champdepraz, Aosta Valley, Italy
Year of Discovery:1957

Physical Properties of Ferroglaucophane

Lustre:Vitreous
Colour:Grey to lavender-blue.
Streak:Pale grey to bluish-grey.
Hardness (Mohs):5 - 6

Crystallography of Ferroglaucophane

Crystal System:Monoclinic
Cell Parameters:a = 9.59Å, b = 17.87Å, c = 5.3Å
β = 103.63°
Ratio:a:b:c = 0.537 : 1 : 0.297
Unit Cell Volume:V 882.70 ų (Calculated from Unit Cell)

Optical Data of Ferroglaucophane

Type:Biaxial (-)
RI values: nα = 1.641 nβ = 1.659 nγ = 1.662
2V:Measured: 42° , Calculated: 44°
Maximum Birefringence:δ = 0.021

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively weak

Chemical Properties of Ferroglaucophane

Formula:
[ ][Na
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
Essential elements:Al, Fe, H, Na, O, Si
All elements listed in formula:Al, Fe, H, Na, O, Si
Common Impurities:Ti,Mn,Ca,K

Relationship of Ferroglaucophane to other Species

Series:Forms a series with Glaucophane (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
9.DE.05Anthophyllite
☐[Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Cummingtonite
[ ][Mg
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Clinoferroholmquistite
[ ][Li
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Grunerite
[ ][Fe
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Manganocummingtonite
[ ][Mn
2+
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Manganogrunerite
[ ][Mn
2+
2
][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Permanganogrunerite
[ ][Mn
2+
2
][Mn
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.05Fluoro-sodic-ferropedrizite
NaLi
 
2
(Fe
 
2
Al
 
2
Li)(Si
 
6
Al
 
2
)O
 
22
F
 
2
9.DE.10Actinolite
☐Ca
 
2
(Mg,Fe
2+
 
)
 
5
(Si
 
8
O
 
22
)(OH)
 
2
9.DE.10Alumino-ferro-hornblende
Ca
 
2
Fe
 
4
Al
 
2
Si
 
7
O
 
22
(OH)
 
2
9.DE.10Alumino-magnesio-hornblende
Ca
 
2
Mg
 
4
Al
 
2
Si
 
7
O
 
22
(OH)
 
2
9.DE.10Aluminotschermakite
☐[Ca
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.10Ferritschermakite
☐[Ca
 
2
][Mg
 
3
Fe
3+
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.10Ferro-Actinolite
☐[Ca
 
2
][(Fe
2+
 
,Mg)
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.10Ferrohornblende
☐[Ca
 
2
][Fe
2+
4
Al][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.10Ferrotschermakite
☐[Ca
 
2
][Fe
2+
3
Fe
3+
 
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.10Joesmithite
PbCa
 
2
Mg
 
3
Fe
3+
2
[Si
 
6
Be
 
2
O
 
22
](OH)
 
2
9.DE.10Magnesiohornblende
☐[Ca
 
2
][Mg
 
4
Al][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.10Tremolite
☐[Ca
 
2
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.10Tschermakite
☐[Ca
 
2
][Mg
 
3
Fe
3+
 
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.10Ferri-Ferrotschermakite
9.DE.10Alumino-Ferrotschermakite
9.DE.10Cannilloite
[Ca][Ca
 
2
][Mg
 
4
Al][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.10Fluor-cannilloite
[Ca][Ca
 
2
][Mg
 
4
Al][(F,OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.10Parvo-manganotremolite
☐[CaMn
2+
 
][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.10Fluorotremolite
☐[Ca
 
2
][Mg
 
5
][F
 
2
|Si
 
8
O
 
22
]
9.DE.15Edenite
Na[Ca
 
2
][Mg
 
5
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.15Ferro-edenite
[Na][Ca
 
2
][Fe
2+
5
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.15Ferrokaersutite
[Na][Ca
 
2
][Fe
2+
4
Ti][O|OH|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Ferropargasite
[Na][Ca
 
2
][Fe
2+
4
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Hastingsite
[Na][Ca
 
2
][Fe
2+
4
Fe
3+
 
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Kaersutite
[Na][Ca
 
2
][Mg
 
4
Ti][O|OH|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Magnesiohastingsite
Na[Ca
 
2
][Mg
 
4
Fe
3+
 
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Magnesiosadanagaite
[Na][Ca
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.15Pargasite
[Na][Ca
 
2
][Mg
 
4
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Sadanagaite
[Na][Ca
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.15Fluoro-edenite
Na[Ca
 
2
][Mg
 
5
][(F,OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.15Potassic-Ferrisadanagaite
[K][Ca
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.15Potassic-Magnesiosadanagaite
[K][Ca
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.15Potassicpargasite
[K][Ca
 
2
][Mg
 
4
Al][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Potassicsadanagaite
[K][Ca
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
3
Si
 
5
O
 
22
]
9.DE.15Fluoro-magnesiohastingsite
[Na][Ca
 
2
][Mg
 
4
Fe
3+
 
][F
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Ferriwhittakerite
Na(Na
 
1.0-1.5
Li
 
0.5-1.0
)
 
2
(Fe
3+
2
Mg
 
2
Li)Si
 
8
O
 
22
(OH)
 
2
9.DE.15Ferri-ottoliniite
[](Na
 
1
Li
 
1
)(Fe
3+
2
Mg
 
3
)Si
 
8
O
 
22
(OH)
 
2
9.DE.15Fluoro-potassichastingsite
[K][Ca
 
2
][Fe
2+
4
Fe
3+
 
][(F,OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Chloro-potassichastingsite
[K][Ca
 
2
][Fe
2+
4
Fe
3+
 
][(Cl,OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Fluoropargasite
[Na][Ca
 
2
][Mg
 
4
Al][(F,OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Parvo-mangano-edenite
Na[CaMn
2+
 
][Mg
 
5
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.15Chloro-potassicpargasite
[K][Ca
 
2
][Mg
 
4
Al][(Cl,OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Chloro-potassic-ferro-edenite
[K][Ca
 
2
][Fe
2+
5
][(Cl,OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.15Potassic-magnesiohastingsite
[K][Ca
 
2
][Mg
 
4
Fe
3+
 
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.15Potassic-ferropargasite
KCa
 
2
(Fe
2+
4
Al)Si
 
6
Al
 
2
O
 
22
(OH)
 
2
9.DE.20Aluminobarroisite
☐[CaNa][Mg
 
3
Al
 
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Aluminokatophorite
9.DE.20Aluminotaramite
Na[CaNa][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Barroisite
☐[CaNa][Mg
 
3
AlFe
3+
 
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferri-ferrobarroisite
☐[CaNa][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferri-ferrowinchite
☐[CaNa][Fe
2+
4
(Fe
3+
 
,Al)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Ferribarroisite
☐[CaNa][Mg
 
3
Fe
3+
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferritaramite
Na[CaNa][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Ferrikatophorite
Na[CaNa][Fe
2+
4
(Fe
3+
 
,Al)][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Alumino-ferrobarroisite
☐[CaNa][Fe
2+
3
Al
 
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferrobarroisite
☐[CaNa][Fe
2+
3
AlFe
3+
 
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferrorichterite
Na[CaNa][Fe
2+
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Ferrowinchite
☐[CaNa][Fe
2+
4
(Al,Fe
3+
 
)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Katophorite
Na[CaNa][Fe
2+
4
(Al,Fe
3+
 
)][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Ferri-magnesiotaramite
Na[CaNa][Mg
 
3
Fe
3+
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Magnesiotaramite
Na[CaNa][Mg
 
3
AlFe
3+
 
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Richterite
Na[CaNa][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Taramite
Na[CaNa][Fe
2+
3
AlFe
3+
 
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Winchite
☐[CaNa][Mg
 
4
(Al,Fe
3+
 
)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Alumino-Magnesiotaramite
Na[CaNa][Mg
 
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20Fluororichterite
Na[CaNa][Mg
 
5
][(F,OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Magnesiokatophorite
Na[CaNa][Mg
 
4
(Al,Fe
3+
 
)][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.20Fluoro-potassicrichterite
K[CaNa][Mg
 
5
][(F,OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Potassicrichterite
K[CaNa][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Parvowinchite
☐[Mn
2+
 
Na][Mg
 
4
(Al,Fe
3+
 
)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Ferriwinchite
☐[CaNa][Mg
 
4
(Fe
3+
 
,Al)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.20Fluoro-alumino-magnesiotaramite
Na[CaNa][Mg
 
3
Al
 
2
][F
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.20IMA2007-015
K[CaNa][Fe
2+
3
Al
 
2
][(OH)
 
2
|Al
 
2
Si
 
6
O
 
22
]
9.DE.25Arfvedsonite
[Na][Na
 
2
][Fe
2+
4
Fe
3+
 
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Eckermannite
[Na][Na
 
2
][(Mg,Fe
2+
 
)
 
4
Al][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Ferro-eckermannite
[Na][Na
 
2
][(Fe
2+
 
,Mg)
 
4
Al][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Glaucophane
[ ][Na
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Kornite
[(Na,K)][Na
 
2
][Mg
 
2
Mn
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Kôzulite
[Na][Na
 
2
][Mn
2+
4
(Fe
3+
 
,Al)][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Leakeite
[Na][Na
 
2
][Mg
 
2
Fe
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Magnesioriebeckite
[ ][Na
 
2
][Mg
 
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Magnesio-arfvedsonite
[Na][Na
 
2
][Mg
 
4
Fe
3+
 
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Nybøite
[Na][Na
 
2
][Mg
 
3
Al
 
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.25Riebeckite
[ ][Na
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Ungarettiite
[Na][Na
 
2
][Mn
2+
2
Mn
3+
3
][O
 
2
|Si
 
8
O
 
22
]
9.DE.25Ferric-ferronybøite
[Na][Na
 
2
][(Fe
2+
 
,Mg)
 
3
Fe
3+
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.25Ferri-clinoferroholmquistite
[ ][Li
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Ferric-nyboite
9.DE.25Ferroleakeite
[Na][Na
 
2
][Fe
2+
2
Fe
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Ferronyböite
[Na][Na
 
2
][Fe
2+
3
Al
 
2
][(OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.25Fluoro-ferroleakeite
[Na][Na
 
2
][Fe
2+
2
Fe
3+
2
Li][(F,OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Sodic-ferri-clinoferroholmquistite
[(☐,Na)][(Li,☐)
 
2
][Fe
2+
3
Fe
3+
2
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Fluoro-magnesio-arfvedsonite
[Na][Na
 
2
][Mg
 
4
Fe
3+
 
][(F,OH)
 
2
|[Si
 
8
O
 
22
]
9.DE.25Sodic-ferripedrizite
[Na][Li
 
2
][Mg
 
2
Fe
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Potassicleakeite
[K][Na
 
2
][Mg
 
2
Fe
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Fluoronybøite
[Na][Na
 
2
][Mg
 
3
Al
 
2
][(F,OH)
 
2
|AlSi
 
7
O
 
22
]
9.DE.25Dellaventuraite
NaNa
 
2
(MgMn
3+
2
LiTi
4+
 
)Si
 
8
O
 
22
O
 
2
9.DE.25Fluoro-sodicpedrizite
[Na][Li
 
2
][Mg
 
2
Al
 
2
Li][(F,OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Potassicarfvedsonite
[(K,Na)][Na
 
2
][Fe
2+
4
Fe
3+
 
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Obertiite
[Na][Na
 
2
][Mg
 
3
(Ti,Fe
3+
 
,Mn
3+
 
)
 
2
][O
 
2
|Si
 
8
O
 
22
]
9.DE.25Fluoro-potassic-magnesio-arfvedsonite
[(K,Na)][Na
 
2
][Mg
 
4
Fe
3+
 
][(F,OH)
 
2
|[Si
 
8
O
 
22
]
9.DE.25Sodic-ferri-ferropedrizite
[Na][Li
 
2
][Fe
2+
2
Fe
3+
2
Li][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Potassic-magnesio-arfvedsonite
[K][Na
 
2
][Mg
 
4
Fe
3+
 
][(OH)
 
2
|Si
 
8
O
 
22
]
9.DE.25Sodicpedrizite
NaLi
 
2
(LiMg
 
2
Fe
3+
 
Al)(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Sodic-ferropedrizite
NaLi
 
2
(LiFe
2+
2
Al)Si
 
8
O
 
22
(OH)
 
2
9.DE.25Pedrizite
Li
 
2
(Li,Mg,Fe
2+
 
Al)
 
5
Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferropedrizite
NaLi
 
2
[Fe
2+
2
Fe
3+
 
AlLi)Si
 
8
O
 
22
(OH)
 
2
9.DE.25IMA2009-012
NaNa
 
2
(Mg
 
2
Al
 
2
Li)(Si
 
8
O
 
22
)F
 
2
9.DE.25IMA2009-034
NaNa
 
2
(Fe
2+
3
Fe
3+
 
Ti)Si
 
8
O
 
22
O
 
2
Related Minerals - Hey's Index Grouping:

- +
16.18.1Nontronite
Na
 
0.3
Fe
 
2
(Si,Al)
 
4
O
 
10
(OH)
 
2
·nH
 
2
O
16.18.3Tuhualite
(Na,K)
 
2
Fe
 
2
Fe
 
2
Si
 
12
O
 
30
·H
 
2
O
16.18.4Annite
KFe
2+
3
[(OH)
 
2
|AlSi
 
3
O
 
10
]
16.18.5Siderophyllite
KFe
2+
2
Al[Al
 
2
Si
 
2
O
 
10
](OH)
 
2

Other Names for Ferroglaucophane

Other Languages:
German:Ferroglaukophan
Russian:Ферроглаукофан

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 Ferroglaucophane

Reference List:Mineralogical Record: 29: 169-174.

Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles: Canadian Mineralogist:
44(1): 1-21.

Internet Links for Ferroglaucophane

Search Engines:
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  • Look for Ferroglaucophane on Wikipedia
  • Look for Ferroglaucophane on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Ferroglaucophane in the Natural History Museum (London) online catalogue
  • Ferroglaucophane details from Handbook of Mineralogy (PDF)
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    Localities for Ferroglaucophane

    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.
    China
     
    • Fujian Province
      • Zhangzhou Prefecture
        • Yunxiao Co.
          • Tongbei
    • Tibet Autonomous Region
      • Nagchu (Naqu) Prefecture
        • Qiangtang metamorphic belt
    Kapp, P., Yin, A., Manning, C.E., Murphy, M., Harrison, T.M., Spurlin, M., Lin, D., Xiguang, D., and Cunming, W. (2000): Geology 28(1), 19-22.
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Yili Hasake (Ili Kazakh) Autonomous Prefecture
    Gao Jiu, Klemd, R., Zhang Lifei, Wang Su, and Xiao Xiong (1999): Journal of Metamorphic Geology 17(6), 621-636.
    France
     
    • Brittany
      • Morbihan
    Greece
     
    • Aegean Islands (Aiyaíon) Department
      • Kykládes Prefecture
        • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
          • Sifnos Island
    Eur. J. Mineral. , 1992, 4, pp. 619-634.
    • South Aegean Department
      • Dodekánisos (Dodekánissa) Prefecture
        • Dodecanese Islands
          • Arki (Arkioi) Island
    Eur. J. Mineral. , 1992, 4, pp. 527-537.
    Guatemala
     
    • Motagua Valley
    Am. Miner., V. 90, pp. 836-842, 2005.
    Hungary
     
    • Borsod-Abaúj-Zemplén Co.
      • Aggteleki Mts.
    www.minerals- of-the- carpathians.eu (Editor:Szakáll)
    • Vas Co.
      • Vas Hill
        • Vaskeresztes
    HOM Collection,Miskolc
    Italy
     
    • Aosta Valley
      • Champdepraz
    Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): Minerali del Piemonte e della Valle d'Aosta, Amici del Museo "F. Eusebio" di Alba, Ed., Alba (Cuneo), 617 pp.
    • Piedmont
      • Torino Province
        • Sesia-Lanzo zone
          • Lanzo Valley
            • Lanzo Massif
              • Balangero - Corio area
                • Malone Valley
    Eur. J. Mineral. , 1989, 1, pp. 89-104.
    Eur. J. Mineral (1989): 1: 89-104.
                  • Rocca Canavese
    Eur. J. Mineral (1989): 1: 89-104.
    Eur. J. Mineral. , 1989, 1, pp. 89-104.
    Eur. J. Mineral. , 1989, 1, pp. 89-104.
    Eur. J. Mineral. , 1989, 1, pp. 89-104.
        • Susa Valley
          • Oulx
    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.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Saitama Prefecture
          • Yorii
    Alfredo Petrov collection
    New Caledonia
    AmMin 55:508
    AmMin 55:508
    Sweden
     
    • Småland
      • Jönköping
        • Gränna
    Hans Thulin: Litofilen , Sweden 13, 1996
    Turkey
     
    • Marmara Region
      • Bursa Province
        • Tavşanlı Zone
    Okay, A.I. (2002): Journal of Metamorphic Geology 20, 757-768.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. Current server date and time: 21st Nov 2009 16:13:44