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Moydite-(Y)

Formula:
Y[CO
 
3
|B(OH)
 
4
]
Hardness:1 - 2
This page provides mineralogical data about Moydite-(Y).

Classification of Moydite-(Y)

IMA status:Approved 1985
Strunz 8th edition ID:5/G.12-10
Nickel-Strunz 10th (pending) edition ID:6.AC.45

6 : BORATES
A : Monoborates
C : B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc
Dana 8th edition ID:27.1.9.1

27 : COMPOUND BORATES
1 : Miscellaneous
Hey's CIM Ref.:10.4.5

10 : Borates with other anions
4 : Borates with carbonate
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Type Occurrence of Moydite-(Y)

Type Locality:Evans-Lou Mine, St-Pierre-de-Wakefield, Portland Township, Papineau Co., Québec, Canada

Physical Properties of Moydite-(Y)

Hardness (Mohs):1 - 2

Optical Data of Moydite-(Y)

Type:Biaxial (-)
RI values: nα = 1.588 nβ = 1.681 nγ = 1.690
2V:Measured: 32° , Calculated: 32°
Maximum Birefringence:δ = 0.102

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

Chemical Properties of Moydite-(Y)

Formula:
Y[CO
 
3
|B(OH)
 
4
]
Essential elements:B, C, H, O, Y
All elements listed in formula:B, C, H, O, Y
Common Impurities:REE

Relationship of Moydite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.AC.05Sinhalite
MgAl[BO
 
4
]
6.AC.10Pseudosinhalite
Mg
 
2
Al
 
3
[O
 
3
|OH|(BO
 
3
)
 
2
]
6.AC.15Behierite
(Ta
5+
 
,Nb
5+
 
)[BO
 
4
]
6.AC.15Schiavinatoite
(Nb,Ta)BO
 
4
6.AC.20Frolovite
Ca[B(OH)
 
4
]
 
2
6.AC.25Hexahydroborite
Ca[B(OH)
 
4
]
 
2
 · 6H
 
2
O
6.AC.30Henmilite
Ca
 
2
Cu[(OH)
 
2
|B(OH)
 
4
]
 
2
6.AC.35Bandylite
Cu[Cl|B(OH)
 
4
]
6.AC.40Teepleite
Na
 
2
[Cl|B(OH)
 
4
]
6.AC.50Carboborite
Ca
 
2
Mg[CO
 
3
|B(OH)
 
4
]
 
2
 · 4H
 
2
O
6.AC.55Sulfoborite
Mg
 
3
[(OH,F)
 
2
|SO
 
4
|{B(OH)
 
4
}
 
2
]
6.AC.60Lüneburgite
Mg
 
3
B
 
2
(PO
 
4
)
 
2
(OH)
 
6
·6H
 
2
O
6.AC.65Seamanite
Mn
2+
3
[(OH)
 
2
|PO
 
4
|B(OH)
 
4
]
6.AC.70Cahnite
Ca
 
2
[AsO
 
4
|B(OH)
 
4
]
Related Minerals - Hey's Index Grouping:

- +
10.4.1Canavesite
Mg
 
2
[CO
 
3
|HBO
 
3
] · 5H
 
2
O
10.4.2Carboborite
Ca
 
2
Mg[CO
 
3
|B(OH)
 
4
]
 
2
 · 4H
 
2
O
10.4.3Borcarite
Ca
 
4
Mg[(CO
 
3
)
 
2
|B
 
4
O
 
6
(OH)
 
6
]
10.4.4Sakhaite
Ca
 
12
Mg
 
4
[Cl|(OH)
 
2
|(CO
 
3
)
 
4
|(BO
 
3
)
 
7
]
10.4.6Gaudefroyite
Ca
 
4
Mn
3+
2-3
[(O,OH)
 
3
|CO
 
3
|(BO
 
3
)
 
3
]

Other Names for Moydite-(Y)

Synonyms:
IMA1985-025
Other Languages:
Russian:Муадит-(Y)

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 Moydite-(Y)

Reference List:American Mineralogist (1988): 73: 193-194.

Canadian Mineralogist (1986): 24: 665-673, 675-678.

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

Internet Links for Moydite-(Y)

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    Localities for Moydite-(Y)

    (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.
    Canada
     
    • Québec
      • Papineau Co.
        • Portland Township
          • St-Pierre-de-Wakefield
    		Grice, et al (1986) Canadian Mineralogist: 24: 675.
    Mineral and/or Locality
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