Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Montdorite

This page is currently not sponsored. Click here to sponsor this page.
Big Photo

Charlannes, La Bourboule, Rochefort-Montagne, Puy-de-Dôme, Auvergne, France
© Arliguie M




Formula:
(K,Na)
 
2
(Fe
2+
 
,Mn
2+
 
,Mg)
 
5
(Si
 
4
O
 
10
)
 
2
(OH,F)
 
4
Member of:Mica Group
Name:For the type locality.


Mica Group.

Classification of Montdorite

IMA status:Approved
Strunz 8th edition ID:8/H.11-40
Nickel-Strunz 10th (pending) edition ID:9.EC.15

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
Dana 8th edition ID:71.2.2a.10

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
Hey's CIM Ref.:14.20.9

14 : Silicates not Containing Aluminum
20 : Silicates of Fe and alkali metals
mindat.org URL:http://www.mindat.org/min-2762.html
Please feel free to link to this page.

Type Occurrence of Montdorite

Type Locality:Charlannes, La Bourboule, Rochefort-Montagne, Puy-de-Dôme, Auvergne, France

Optical Data of Montdorite

Type:Biaxial (-)
RI values: nα = 1.580 nβ = 1.605 nγ = 1.605
Maximum Birefringence:δ = 0.025

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Montdorite

Formula:
(K,Na)
 
2
(Fe
2+
 
,Mn
2+
 
,Mg)
 
5
(Si
 
4
O
 
10
)
 
2
(OH,F)
 
4
Essential elements:Fe, H, K, O, Si
All elements listed in formula:F, Fe, H, K, Mg, Mn, Na, O, Si

Relationship of Montdorite to other Species

Member of:Mica Group
Other Members of Group:

- +
Aluminoceladonite
K(Mg,Fe
2+
 
)Al(Si
 
4
O
 
10
)(OH)
 
2
Anandite
(Ba,K)(Fe
2+
 
,Mg)
 
3
((Si,Al,Fe)
 
4
O
 
10
)(S,OH)
 
2
Aspidolite
NaMg
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
Biotite
Bityite
LiCaAl
 
2
(AlBeSi
 
2
O
 
10
)(OH)
 
2
Boromuscovite
KAl
 
2
(BSi
 
3
O
 
10
)(OH)
 
2
Celadonite
K(Mg,Fe
2+
 
)Fe
3+
 
(Si
 
4
O
 
10
)(OH)
 
2
Chernykhite
(Ba,Na)(V
3+
 
,Al,Mg)
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
Chromceladonite
K(Mg,Fe
2+
 
)(Cr,Al)(Si
 
4
O
 
10
)(OH)
 
2
Chromphyllite
K(Cr,Al)
 
2
(AlSi
 
3
O
 
10
)(OH,F)
 
2
Clintonite
Ca(Mg,Al)
 
3
(Al
 
3
SiO
 
10
)(OH)
 
2
Ephesite
LiNaAl
 
2
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
Ferro-aluminoceladonite
K(Fe
2+
 
,Mg)(Al,Fe
3+
 
)(Si
 
4
O
 
10
)(OH)
 
2
Ferroceladonite
K(Fe
2+
 
,Mg)(Fe
3+
 
,Al)(Si
 
4
O
 
10
)(OH)
 
2
Ferrokinoshitalite
(Ba,K)(Fe
2+
 
,Mg)
 
3
(Al
 
2
Si
 
2
O
 
10
)(OH,F)
 
2
Ganterite
(Ba,Na,K)(Al,Mg)
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
Glauconite
(K,Na)(Fe
3+
 
,Al,Mg)
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
Hendricksite
K(Zn,Mg,Mn
2+
 
)
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
Illite
K
 
0.65
Al
 
2.0
[ ][Al
 
0.65
Si
 
3.35
O
 
10
](OH)
 
2
Kinoshitalite
(Ba,K)(Mg,Mn
2+
 
,Al)
 
3
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
Lepidolite
Margarite
CaAl
 
2
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
Masutomilite
(K,Rb)(Li,Mn
3+
 
,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
Muscovite
KAl
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
Nanpingite
CsAl
 
2
(AlSi
 
3
O
 
10
)(OH,F)
 
2
Norrishite
KLiMn
2+
2
(Si
 
4
O
 
10
)(OH)
 
2
Oxykinoshitalite
(Ba,K)(Mg,Ti,Fe
3+
 
,Fe
2+
 
)
 
3
((Si,Al)
 
4
O
 
10
)(O,OH,F)
 
2
Oxyphlogopite
KMg
 
2
Ti(AlSi
 
3
O
 
10
)O
 
2
Phengite
Polylithionite
KLi
 
2
Al(Si
 
4
O
 
10
)(F,OH)
 
2
Preiswerkite
NaMg
 
2
Al(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
Roscoelite
K(V
3+
 
,Al)
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
Shirokshinite
KNaMg
 
2
(Si
 
4
O
 
10
)F
 
2
Shirozulite
K(Mn
2+
 
,Mg)
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
Sokolovaite
CsLi
 
2
Al(Si
 
4
O
 
10
)F
 
2
Suhailite
(NH
 
4
)Fe
2+
3
(AlSi
 
3
O
 
10
)(OH)
 
2
Tainiolite
KLiMg
 
2
(Si
 
4
O
 
10
)F
 
2
Tetraferriphlogopite
KMg
 
3
(Fe
3+
 
Si
 
3
O
 
10
)(OH,F)
 
2
Tobelite
(NH
 
4
,K)Al
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
Trilithionite
K(Li,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
Voloshinite
Rb(LiAl
 
1.5
□
 
1.5
)(Al
 
0.5
Si
 
3.5
)O
 
10
F
 
2
Yangzhumingite
KMg
 
2.5
(Si
 
4
O
 
10
)F
 
2
Zinnwaldite
KLiFe
2+
 
Al(AlSi
 
3
O
 
10
)(F,OH)
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
9.EC.05Minnesotaite
(Fe,Mg)
 
3
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.05Talc
Mg
 
3
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.05Willemseite
(Ni,Mg)
 
3
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.10Ferripyrophyllite
Fe
3+
2
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.10Pyrophyllite
Al
 
2
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Boromuscovite
KAl
 
2
(BSi
 
3
O
 
10
)(OH)
 
2
9.EC.15Celadonite
K(Mg,Fe
2+
 
)Fe
3+
 
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Chernykhite
(Ba,Na)(V
3+
 
,Al,Mg)
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
9.EC.15Muscovite
KAl
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.15Nanpingite
CsAl
 
2
(AlSi
 
3
O
 
10
)(OH,F)
 
2
9.EC.15Paragonite
NaAl
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.15Roscoelite
K(V
3+
 
,Al)
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.15Tobelite
(NH
 
4
,K)Al
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.15Aluminoceladonite
K(Mg,Fe
2+
 
)Al(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Chromphyllite
K(Cr,Al)
 
2
(AlSi
 
3
O
 
10
)(OH,F)
 
2
9.EC.15Ferro-aluminoceladonite
K(Fe
2+
 
,Mg)(Al,Fe
3+
 
)(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Ferroceladonite
K(Fe
2+
 
,Mg)(Fe
3+
 
,Al)(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Chromceladonite
K(Mg,Fe
2+
 
)(Cr,Al)(Si
 
4
O
 
10
)(OH)
 
2
9.EC.15Tainiolite
KLiMg
 
2
(Si
 
4
O
 
10
)F
 
2
9.EC.15Ganterite
(Ba,Na,K)(Al,Mg)
 
2
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Annite
KFe
2+
3
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Ephesite
LiNaAl
 
2
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.20Hendricksite
K(Zn,Mg,Mn
2+
 
)
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Masutomilite
(K,Rb)(Li,Mn
3+
 
,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
9.EC.20Norrishite
KLiMn
2+
2
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.20Phlogopite
KMg
 
3
(AlSi
 
3
O
 
10
)(OH,F)
 
2
9.EC.20Polylithionite
KLi
 
2
Al(Si
 
4
O
 
10
)(F,OH)
 
2
9.EC.20Preiswerkite
NaMg
 
2
Al(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.20Siderophyllite
KFe
2+
2
Al(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.20Tetraferriphlogopite
KMg
 
3
(Fe
3+
 
Si
 
3
O
 
10
)(OH,F)
 
2
9.EC.20Fluorotetraferriphlogopite
KMg
 
3
(Fe
3+
 
Si
 
3
O
 
10
)F
 
2
9.EC.20Wonesite
(Na,K)(Mg,Fe,Al)
 
6
((Al,Si)
 
4
O
 
10
)
 
2
(OH,F)
 
4
9.EC.20Eastonite
KMg
 
2
Al(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.20Tetraferriannite
KFe
2+
3
((Fe
3+
 
,Al)Si
 
3
O
 
10
)(OH)
 
2
9.EC.20Trilithionite
K(Li,Al)
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
9.EC.20Fluorannite
KFe
2+
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
9.EC.20Shirokshinite
KNaMg
 
2
(Si
 
4
O
 
10
)F
 
2
9.EC.20Shirozulite
K(Mn
2+
 
,Mg)
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Sokolovaite
CsLi
 
2
Al(Si
 
4
O
 
10
)F
 
2
9.EC.20Aspidolite
NaMg
 
3
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Fluorophlogopite
KMg
 
3
(AlSi
 
3
O
 
10
)(F,OH)
 
2
9.EC.20UM2004-49-SiO:AlCsFHKLi
(Cs,K)(Al,Li)
 
2.6
((Si,Al)
 
4
O
 
10
)(F,OH)
 
2
9.EC.20Suhailite
(NH
 
4
)Fe
2+
3
(AlSi
 
3
O
 
10
)(OH)
 
2
9.EC.20Yangzhumingite
KMg
 
2.5
(Si
 
4
O
 
10
)F
 
2
9.EC.20IMA2009-006
KLi
 
2
Ti(Si
 
4
O
 
10
)OF
9.EC.25Brammallite
(Na,H
 
3
O)(Al,Mg,Fe)
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
9.EC.30Margarite
CaAl
 
2
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.35Anandite
(Ba,K)(Fe
2+
 
,Mg)
 
3
((Si,Al,Fe)
 
4
O
 
10
)(S,OH)
 
2
9.EC.35Bityite
LiCaAl
 
2
(AlBeSi
 
2
O
 
10
)(OH)
 
2
9.EC.35Clintonite
Ca(Mg,Al)
 
3
(Al
 
3
SiO
 
10
)(OH)
 
2
9.EC.35Kinoshitalite
(Ba,K)(Mg,Mn
2+
 
,Al)
 
3
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
9.EC.35Ferrokinoshitalite
(Ba,K)(Fe
2+
 
,Mg)
 
3
(Al
 
2
Si
 
2
O
 
10
)(OH,F)
 
2
9.EC.35Oxykinoshitalite
(Ba,K)(Mg,Ti,Fe
3+
 
,Fe
2+
 
)
 
3
((Si,Al)
 
4
O
 
10
)(O,OH,F)
 
2
9.EC.35Fluorokinoshitalite
BaMg
 
3
(Al
 
2
Si
 
2
O
 
10
)F
 
2
9.EC.40Beidellite
(Na,Ca
 
0.5
)
 
0.3
Al
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · nH
 
2
O
9.EC.40Kurumsakite
(Zn,Ni,Cu)
 
8
Al
 
8
V
5+
2
Si
 
5
O
 
35
 · 27H
 
2
O (?)
9.EC.40Montmorillonite
(Na,Ca)
 
0.33
(Al,Mg)
 
2
(Si
 
4
O
 
10
)(OH)
 
2
 · nH
 
2
O
9.EC.40Nontronite
Na
 
0.3
Fe
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · nH
 
2
O
9.EC.40Volkonskoite
Ca
 
0.3
(Cr,Mg,Fe)
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
9.EC.40Yakhontovite
(Ca,Na)
 
0.5
(Cu,Fe,Mg)
 
2
(Si
 
4
O
 
10
)(OH)
 
2
 · 3H
 
2
O
9.EC.45Hectorite
Na
 
0.3
(Mg,Li)
 
3
(Si
 
4
O
 
10
)(F,OH)
 
2
9.EC.45Saponite
Ca
 
0.25
(Mg,Fe)
 
3
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · nH
 
2
O
9.EC.45Sauconite
Na
 
0.3
Zn
 
3
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
9.EC.45Spadaite
MgSiO
 
2
(OH)
 
2
 · H
 
2
O (?)
9.EC.45Stevensite
(Ca,Na)
 
x
Mg
 
3-x
(Si
 
4
O
 
10
)(OH)
 
2
9.EC.45Swinefordite
Li(Al,Li,Mg)
 
4
((Si,Al)
 
4
O
 
10
)
 
2
(OH,F)
 
4
 · nH
 
2
O
9.EC.45Zincsilite
Zn
 
3
(Si
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
9.EC.45Ferrosaponite
Ca
 
0.3
(Fe
2+
 
,Mg,Fe
3+
 
)
 
3
((Si,Al)
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
9.EC.50Vermiculite
(Mg,Fe,Al)
 
3
((Al,Si)
 
4
O
 
10
)(OH)
 
2
 · 4H
 
2
O
9.EC.55Baileychlore
(Zn,Fe,Al,Mg)
 
6
((Si,Al)
 
4
O
 
10
)(OH)
 
8
9.EC.55Chamosite
(Fe
2+
 
,Mg)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Clinochlore
(Mg,Fe
2+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Cookeite
LiAl
 
4
(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Franklinfurnaceite
Ca
 
2
Fe
3+
 
Mn
2+
3
Mn
3+
 
(Zn
 
2
Si
 
2
O
 
10
)(OH)
 
8
9.EC.55Gonyerite
(Mn
2+
 
,Mg)
 
5
Fe
3+
 
(Fe
3+
 
Si
 
3
O
 
10
)(OH)
 
8
9.EC.55Nimite
(Ni,Mg,Al)
 
6
((Si,Al)
 
4
O
 
10
)(OH)
 
8
9.EC.55Orthochamosite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
5
Al(AlSi
 
3
O
 
10
)(OH,O)
 
8
9.EC.55Pennantite
Mn
2+
5
Al(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Sudoite
(Mg,Fe
2+
 
)
 
2
Al
 
3
(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Donbassite
Al
 
4.33
(AlSi
 
3
O
 
10
)(OH)
 
8
9.EC.55Glagolevite
Na(Mg,Al)
 
6
(AlSi
 
3
O
 
10
)(OH,O)
 
8
9.EC.55Borocookeite
Li
 
1+3x
Al
 
4-x
(BSi
 
3
O
 
10
)(OH)
 
8
9.EC.60Aliettite
Ca
 
0.2
Mg
 
6
((Si,Al)
 
8
O
 
20
)(OH)
 
4
 · 4H
 
2
O
9.EC.60Corrensite
(Mg,Fe)
 
9
((Si,Al)
 
8
O
 
20
)(OH)
 
10
 · nH
 
2
O
9.EC.60Dozyite
Mg
 
7
Al
 
2
(Al
 
2
Si
 
4
O
 
15
)(OH)
 
12
9.EC.60Hydrobiotite
K(Mg,Fe
2+
 
)
 
6
((Si,Al)
 
8
O
 
20
)(OH)
 
4
 · nH
 
2
O
9.EC.60Karpinskite
(Ni,Mg)
 
2
Si
 
2
O
 
5
(OH)
 
2
 (?)
9.EC.60Kulkeite
Mg
 
8
Al(AlSi
 
7
O
 
20
)(OH)
 
10
9.EC.60Lunijianlaite
Li
 
0.7
Al
 
6.2
(AlSi
 
7
lO
 
20
)(OH,O)
 
10
9.EC.60Rectorite
(Na,Ca)Al
 
4
((Si,Al)
 
8
O
 
20
)(OH)
 
4
 · 2H
 
2
O
9.EC.60Saliotite
(Li,Na)Al
 
3
(AlSi
 
3
O
 
10
)(OH)
 
5
9.EC.60Tosudite
Na
 
0.5
(Al,Mg)
 
6
((Si,Al)
 
8
O
 
18
)(OH)
 
12
 · 5H
 
2
O
9.EC.60Brinrobertsite
Na
 
0.3
Al
 
4
(Si
 
4
O
 
10
)
 
2
(OH)
 
4
 · 3.5 H
 
2
O
9.EC.65Macaulayite
(Fe,Al)
 
24
Si
 
4
O
 
43
(OH)
 
2
9.EC.70Burckhardtite
Pb
 
2
(Fe
3+
 
,Mn
3+
 
)Te
4+
 
(AlSi
 
3
O
 
10
)O
 
2
(OH)
 
2
 · H
 
2
O
9.EC.75Ferrisurite
(Pb,Ca)
 
2.4
Fe
3+
2
(Si
 
4
O
 
10
)(CO
 
3
)
 
1.7
(OH)
 
3
 · nH
 
2
O
9.EC.75Surite
(Pb,Ca)
 
3
(Al,Fe
2+
 
,Mg)
 
2
((Si,Al)
 
4
O
 
10
)(CO
 
3
)
 
2
(OH)
 
2
9.EC.75Niksergievite
(Ba,Ca)
 
2
Al
 
3
(AlSi
 
3
O
 
10
)(CO
 
3
)(OH)
 
6
 · nH
 
2
O
9.EC.80Kegelite
Pb
 
8
Al
 
4
(Si
 
8
O
 
20
)(SO
 
4
)
 
2
(CO
 
3
)
 
4
(OH)
 
8
Related Minerals - Hey's Index Grouping:

- +
14.20.1Emeleusite
Li
 
2
Na
 
4
Fe
 
2
Si
 
12
O
 
30
14.20.2Aegirine
NaFe
3+
 
Si
 
2
O
 
6
14.20.4Wilkinsonite
Na
 
2
Fe
2+
4
Fe
3+
2
(Si
 
6
O
 
18
)O
 
2
14.20.5Tuperssuatsiaite
Na
 
2
Fe
 
3
Si
 
8
O
 
20
(OH)
 
2
 · 4H
 
2
O
14.20.6Riebeckite
◻[Na
 
2
][Fe
2+
3
Fe
3+
2
]Si
 
8
O
 
22
(OH)
 
2
14.20.7 Ferri-annite
14.20.8Fenaksite
(K,Na)
 
4
(Fe,Mn)
 
2
(Si
 
4
O
 
10
)
 
2
(OH,F)

Other Names for Montdorite

Other Languages:
German:Montdorit
Spanish:Montdorita

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 Montdorite

Reference List:

- +
Robert J.-L. & Maury R.C. (1979): Contributions to Mineralogy and Petrology 68, 117-123.

American Mineralogist (1979): 64: 1331.

Canadian Mineralogist (1998): 36: 905-912.

Internet Links for Montdorite

Search Engines:
  • Look for Montdorite on Google
  • Look for Montdorite images on Google
    • External Links:
  • Look for Montdorite on Webmineral
  • Look for Montdorite on Athena Mineralogy[Link Broken?]
  • Look for Montdorite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Search for - Montdorite - on e-Rocks Mineral Sales & Auctions
  • webminerals
  • Pricedownminerals.com - Reverse Auctions and Shop
  • Find Montdorite on www.crystalclassics.co.uk
  • Buy from David K Joyce minerals
  • Search for minerals at Heliodor
  • Edwards Minerals - Fine Specimens
  • SpiriferMinerals.com - high quality low prices
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy RARE Minerals from Rocks of Africa
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Montdorite

    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.
    Algeria
     
    • Annaba Province
      • Cap de Fer
    		Eur. J. Mineral. , 1996, 8, pp. 625-638.
    France
     
    • Auvergne
      • Puy-de-Dôme
        • Rochefort-Montagne
          • La Bourboule
    		Robert JL, Maury RC (1979) Natural occurrence of a (Fe, Mn, Mg) tetrasilicic potassium mica. Contrib. Mineral. Petrol. 68: 117-123
    Kenya
     
    • Rift Valley Province
      • Hell’s Gate National Park
    		Mineralogical Magazine, August 1998, V. 62, N° 4, pp. 477-486. / Journal of Petrology, Vol. 42, N° 4, pp. 825-845, 2001. / Mineralogical Magazine, Volume 66, Number 2, 1 April 2002, pp. 287-299(13) / The United Nations University, GEOTHERMAL TRAINING PROGRAMME Reports 2004, Number 1, Orkustofnun, Grensásvegur 9, IS-108 Reykjavík, Iceland
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. 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.
    Current server date and time: 20th Nov 2011 08:10:59
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds