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Gladiusite

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Kovdor Mine, Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Thomas Witzke

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Formula:
Fe
 
2
(Fe,Mg)
 
4
(PO
 
4
)(OH)
 
11
(H
 
2
O)
System:MonoclinicColour:Dark green, almost black,
Lustre:VitreousHardness:4 - 4½
Name:For the crystal morphology (resembling a double-edged sword (gladius, Latin for sword)).
This page provides mineralogical data about Gladiusite.

Classification of Gladiusite

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID:8.DF.40

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
F : With only medium-sized cations, (OH,etc.):RO4 > 3:1
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Type Occurrence of Gladiusite

Type Locality:Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Gladiusite

Lustre:Vitreous
Colour:Dark green, almost black,
Streak: olive-green
Hardness (Mohs):4 - 4½

Crystallography of Gladiusite

Crystal System:Monoclinic

Optical Data of Gladiusite

Type:Biaxial (-)
RI values: nα = 1.722 nβ = 1.730 nγ = 1.737
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v

Chemical Properties of Gladiusite

Formula:
Fe
 
2
(Fe,Mg)
 
4
(PO
 
4
)(OH)
 
11
(H
 
2
O)
Essential elements:Fe, H, O, P
All elements listed in formula:Fe, H, Mg, O, P

Relationship of Gladiusite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DF.05Hotsonite
Al
 
11
[(OH)
 
21
|(SO
 
4
)
 
3
|(PO
 
4
)
 
2
] · 16H
 
2
O
8.DF.10Bolivarite
Al
 
2
[(OH)
 
3
|PO
 
4
] · 4-5H
 
2
O
8.DF.10Evansite
Al
 
3
[(OH)
 
6
|PO
 
4
] · 6H
 
2
O
8.DF.10Liskeardite
(Al,Fe
3+
 
)
 
3
[(OH)
 
6
|AsO
 
4
] · 5H
 
2
O
8.DF.10Rosièresite
(Pb, Cu, Al, P, O, H)
8.DF.15Rusakovite
(Fe
3+
 
,Al)
 
5
[(OH)
 
9
|(VO
 
4
,PO
 
4
)
 
2
] · 3H
 
2
O
8.DF.20Liroconite
Cu
 
2
Al[(OH)
 
4
|AsO
 
4
] · 4H
 
2
O
8.DF.25Sieleckiite
Cu
 
3
Al
 
4
[(OH)
 
6
|PO
 
4
]
 
2
 · 2H
 
2
O
8.DF.30Chalcophyllite
Cu
 
18
Al
 
2
[(OH)
 
9
|SO
 
4
|AsO
 
4
]
 
3
 · 33H
 
2
O
8.DF.35Parnauite
Cu
 
9
[(OH)
 
10
|SO
 
4
|(AsO
 
4
)
 
2
] · 7H
 
2
O

Other Names for Gladiusite

Synonyms:
IMA1998-011
Other Languages:
German:Gladiusit
Russian:Гладиусит
Spanish:Gladiusita

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 Gladiusite

Reference List:Liferovich, R.P., Sokolova, E.V., Hawthorne, F.C., Laajoki, K.V.O., Gehör, S., Pakhomovsky, Ya.A., and Sorokhtina, N.V. (2000) Gladiusite, Fe 3+ 2(Fe 2+,Mg)4(PO4)(OH)11(H2O), a new hydrothermal mineral species from the phoscorite-carbonatite unit, Kovdor complex, Kola Peninsula, Russia. Canadian Mineralogist: 38: 1477-1485.

Internet Links for Gladiusite

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    Localities for Gladiusite

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    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: 13th Nov 2009 03:43:32