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Metaborite

Big Photo

Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan
© Pavel M. Kartashov

Show Metaborite Photos (3)
Formula:
HBO
 
2
System:IsometricColour:Colourless, brownish
Lustre:VitreousHardness:5
This page provides mineralogical data about Metaborite.

Classification of Metaborite

IMA status:Approved
Strunz 8th edition ID:5/L.01-10
Nickel-Strunz 10th (pending) edition ID:6.GD.10

6 : BORATES
G : Heptaborates and other megaborates
D : Mega-tektoborates
Dana 8th edition ID:24.5.1.1

24 : ANHYDROUS BORATES
5 : Miscellaneous
Hey's CIM Ref.:9.1.2

9 : Borates
1 : Borates of the alkalis and boric acid
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Type Occurrence of Metaborite

Type Locality:Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan
Year of Discovery:1964

Physical Properties of Metaborite

Lustre:Vitreous
Colour:Colourless, brownish
Hardness (Mohs):5

Crystallography of Metaborite

Crystal System:Isometric
Cell Parameters:a = 8.88Å
Unit Cell Volume:V 700.23 ų (Calculated from Unit Cell)

Optical Data of Metaborite

Type:Isotropic

Chemical Properties of Metaborite

Formula:
HBO
 
2
Essential elements:B, H, O
All elements listed in formula:B, H, O

Relationship of Metaborite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.GD.05Pringleite
Ca
 
9
B
 
26
O
 
34
(OH)
 
24
Cl
 
4
·13H
 
2
O
6.GD.05Ruitenbergite
Ca
 
9
B
 
26
O
 
34
(OH)
 
24
Cl
 
4
·13H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
9.1.1Sassolite
H
 
3
BO
 
3
9.1.3Diomignite
Li
 
2
[B
 
4
O
 
7
]
9.1.4Biringuccite
Na
 
2
B
 
5
O
 
8
(OH)·H
 
2
O
9.1.5Nasinite
Na
 
4
B
 
10
O
 
17
·5H
 
2
O
9.1.6Kernite
Na
 
2
[B
 
4
O
 
6
(OH)
 
2
] · 3H
 
2
O
9.1.7Ezcurrite
Na
 
4
B
 
10
O
 
17
·7H
 
2
O
9.1.8Tincalconite
Na
 
2
[B
 
4
O
 
7
] · 5H
 
2
O
9.1.9Borax
Na
 
2
[B
 
4
O
 
7
] · 10H
 
2
O
9.1.10Ameghinite
Na(H
 
4
B
 
3
O
 
7
)
9.1.11Sborgite
Na[B
 
5
O
 
6
(OH)
 
4
] · 3H
 
2
O
9.1.12Aristarainite
Na
 
2
MgB
 
12
O
 
20
·8H
 
2
O
9.1.13Santite
K[B
 
5
O
 
6
(OH)
 
4
] · 2H
 
2
O
9.1.14Larderellite
(NH
 
4
)B
 
5
O
 
6
(OH)
 
4
9.1.15Ammonioborite
(NH
 
4
)
 
2
[B
 
5
O
 
6
(OH)
 
4
]
 
2
 · H
 
2
O
9.1.16Rhodizite
(K,Cs)Al
 
4
Be
 
4
(B,Be)
 
12
O
 
28

Other Names for Metaborite

Other Languages:
German:Metaborit
Spanish:Metaborita

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 Metaborite

Reference List:American Mineralogist (1965): 50: 261-262.

Acta Crystallographica: 16: 380-384.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Articles/Blogs about Metaborite

Internet Links for Metaborite

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    Localities for Metaborite

    (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.
    Kazakhstan
     
    • Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast')
      • Aksai Valley
    		American Mineralogist (1965): 50: 261-262.; Handbook of Mineralogy Vol V p 6
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