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Prismatine

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Granulite outcrop, Waldheim, Döbeln, Saxony, Germany
© Thomas Witzke

Show Prismatine Photos (10)
Formula:
([ ],Fe,Mg)(Mg,Al,Fe)
 
5
Al
 
4
Si
 
2
(Si,Al)
 
2
(B,Si,Al)(O,OH,F)
 
22
System:OrthorhombicColour:Gray-green
Lustre:VitreousHardness:6½ - 7
Name:for the prismatic form of the crystals


A complex silicate related to kornerupine.

Classification of Prismatine

IMA status:Approved
Strunz 8th edition ID:8/B.31-12
Nickel-Strunz 10th (pending) edition ID:9.BJ.50

9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
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Type Occurrence of Prismatine

Type Locality:Granulite outcrop, Waldheim, Döbeln, Saxony, Germany
Year of Discovery:1886

Physical Properties of Prismatine

Lustre:Vitreous
Colour:Gray-green
Hardness (Mohs):6½ - 7

Crystallography of Prismatine

Crystal System:Orthorhombic

Optical Data of Prismatine

Type:Biaxial (-)
RI values: nα = 1.669 - 1.671 nβ = 1.681 - 1.830 nγ = 1.682 - 1.684
Maximum Birefringence:δ = 0.013

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

Chemical Properties of Prismatine

Formula:
([ ],Fe,Mg)(Mg,Al,Fe)
 
5
Al
 
4
Si
 
2
(Si,Al)
 
2
(B,Si,Al)(O,OH,F)
 
22
Essential elements:Al, B, Mg, O, Si
All elements listed in formula:Al, B, F, Fe, H, Mg, O, Si

Relationship of Prismatine to other Species

Related Minerals - Nickel-Strunz Grouping):
9.BJ.05Orientite
Ca
 
2
MnMn
 
2
Si
 
3
O
 
10
(OH)
 
4
9.BJ.10Rosenhahnite
HCa
 
3
[Si
 
3
O
 
9
(OH)]
9.BJ.15Trabzonite
Ca
 
4
Si
 
3
O
 
10
·2H
 
2
O
9.BJ.20Thalénite-(Y)
Y
 
3
Si
 
3
O
 
10
(OH)
9.BJ.20Fluorthalénite-(Y)
Y
 
3
Si
 
3
O
 
10
F
9.BJ.25Tiragalloite
Mn
 
4
AsSi
 
3
O
 
12
(OH)
9.BJ.30Medaite
(Mn,Ca)
 
6
(V,As)Si
 
5
O
 
18
OH
9.BJ.35Ruizite
Ca
 
2
Mn
3+
2
[(OH)
 
2
|H
 
2
Si
 
4
O
 
13
] · 2H
 
2
O
9.BJ.40Ardennite-(As)
Mn
2+
4
[(Al,Mg)
 
6
][(OH)
 
6
|(AsO
 
4
,VO
 
4
)|(SiO
 
4
)
 
2
|Si
 
3
O
 
10
]
9.BJ.40Ardennite-(V)
Mn
2+
4
[Al
 
4
(Mg,Al,Fe
3+
 
,Mn
3+
 
)
 
2
][(OH)
 
6
|(VO
 
4
,SiO
 
4
)|(SiO
 
4
)
 
2
|Si
 
3
O
 
10
]
9.BJ.45Kilchoanite
Ca
 
3
Si
 
2
O
 
7
9.BJ.50Kornerupine
Mg
 
3
Al
 
6
(Si,Al,B)
 
5
O
 
21
(OH)
9.BJ.55Zunyite
Al
 
13
Si
 
5
O
 
20
(OH,F)
 
18
Cl
9.BJ.60Hubeite
Ca
 
2
Mn
2+
 
Fe
3+
 
[HSi
 
4
O
 
13
] · 2H
 
2
O
9.BJ.65Cassagnaite
(Ca,Mn
2+
 
)
 
4
(Fe
3+
 
,Mn
3+
 
,Al)
 
4
(V
3+
 
,Mg,Al)
 
2
[(O,OH)
 
4
|(OH)
 
4
|(SiO
 
4
)
 
2
|Si
 
3
O
 
10
]

Other Names for Prismatine

German names:
Prismatin

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 Prismatine

Reference List:Sauer, A. (1886): (Über eine eigentümliche Granulitart als Muttergestein zweier neuer Mineralspecies).- Zeitschrift der Deutschen Geologischen Gesellschaft 38, 704-705.

Grew, E.S., M.A. Cooper & F.C. Hawthorne (1996): Prismatine: Revalidation for boron-rich compositions in the kornerupine group.- Mineralogical Magazine 60, 483-491.

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

Internet Links for Prismatine

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  • Raman and XRD data at RRUFF project
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    Localities for Prismatine

    Hide Locality List
    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.
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    (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.
    Antarctica
     
    • Eastern Antarctica
      • Princess Elizabeth Land
        • Ingrid Christensen Coast
          • Prydz Bay
    		Can Min 41, (2), 2003, 393-411
    Germany
     
    • Saxony
      • Döbeln
        • Waldheim
    		A. Sauer (1886) Zeitschrift der Deutschen Geologischen Gesellschaft 38, 704-705; Grew, E.S., M.A. Cooper & F.C. Hawthorne (1996): Prismatine: Revalidation for boron-rich compositions in the kornerupine group. Mineralogical Magazine 60, 483-491.
    Slovakia
     
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
    		Pauliš P., Ďuďa R., 2002:Nejznámejší mineralogická nalezište Slovenska. Kuttna, Kutná Hora, 136p
    Sweden
     
    • Hälsingland
      • Nordanstig
        • Hassela
    		GFF 118 (1996), A52-A53
    USA
     
    • New Jersey
      • Morris Co.
        • Jefferson Township
          • Tierneys Corner
    		http://library.iem.ac.ru/can-min/vol33/cm6/young.html; Canadian Mineralogist: 33(6): 1255-1262.
    • New York
      • Lewis Co.
        • Lyonsdale
    		George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.
    Mineral and/or Locality
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