Prismatine
A valid IMA mineral species - grandfathered
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About Prismatine
Formula:
(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Colour:
Gray-green, gold brown, purplish gray, gray
Lustre:
Vitreous
Hardness:
6½ - 7
Specific Gravity:
3.341 - 3.345
Crystal System:
Orthorhombic
Name:
For the prismatic form of the crystals.
Type Locality:
Kornerupine-Prismatine Series.
Prismatine was reintroduced as a valid species name by Grew et al. (1996) when the boron content was able to be differentiated from the boron content in kornerupine.
Prismatine was reintroduced as a valid species name by Grew et al. (1996) when the boron content was able to be differentiated from the boron content in kornerupine.
Unique Identifiers
Mindat ID:
7252
Long-form identifier:
mindat:1:1:7252:2
GUID
(UUID V4):
(UUID V4):
46655a22-7b00-44d7-95d1-900d723bd3bd
IMA Classification of Prismatine
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Redefined by the IMA
IMA Formula:
(Mg,Al,Fe)6Al4(Si,Al)4(B,Si,Al)(O,OH,F)22
First published:
1886
Approval history:
Redefined 1995 s.p.: Grew et al. (1996).
Classification of Prismatine
9.BJ.50
9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
J : Sorosilicates with Si3O10, Si4O11, etc. anions; cations in octahedral [6] and greater coordination
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Prm | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Prm | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Prm | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Prismatine
Vitreous
Transparency:
Translucent, Opaque
Colour:
Gray-green, gold brown, purplish gray, gray
Hardness:
6½ - 7 on Mohs scale
Cleavage:
Perfect
{110}
{110}
Density:
3.341 - 3.345 g/cm3 (Measured)
Optical Data of Prismatine
Type:
Biaxial (-)
RI values:
nα = 1.669 - 1.671 nβ = 1.681 - 1.830 nγ = 1.682 - 1.684
2V:
Measured: 28° to 38°
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v strong
Pleochroism:
Visible
Comments:
colourless to greenish, reddish, yellow, and yellow-brown
Comments:
sections of greater than standard thickness
Chemistry of Prismatine
Mindat Formula:
(◻,Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Crystallography of Prismatine
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Setting:
Cmcm
Cell Parameters:
a = 15.949(2) Å, b = 13.669(2) Å, c = 6.692(1) Å
Ratio:
a:b:c = 1.167 : 1 : 0.49
Unit Cell V:
1,458.90 ų (Calculated from Unit Cell)
Comment:
Prismatine 5 105M Bahnhof
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Prismatine
General Appearance of Type Material:
Unterminated prismatic crystals up to about 5-6 cm in length, distributed randomly or radially grouped.
Place of Conservation of Type Material:
'Mineralogische Schausammlung', Technische Universitat Berlin.
Geological Setting of Type Material:
Granulite-facies with oligoclase, sillimanite, garnet, and/or tourmaline.
Associated Minerals at Type Locality:
Reference:
Sauer, A. (1886) Über eine eigentümliche Granulitart als Muttergestein zweier neuer Mineralspecies). Zeitschrift der Deutschen Geologischen Gesellschaft 38, 704-705.
Other Language Names for Prismatine
German:Prismatin
Relationship of Prismatine to other Species
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
10 photos of Prismatine associated with Enstatite | Mg2Si2O6 |
8 photos of Prismatine associated with Sillimanite | Al2(SiO4)O |
8 photos of Prismatine associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
6 photos of Prismatine associated with Talc | Mg3Si4O10(OH)2 |
5 photos of Prismatine associated with Quartz | SiO2 |
5 photos of Prismatine associated with Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
5 photos of Prismatine associated with Almandine | Fe2+3Al2(SiO4)3 |
5 photos of Prismatine associated with Pyrite | FeS2 |
1 photo of Prismatine associated with Ruby | Al2O3 |
Related Minerals - Strunz-mindat Grouping
9.BJ. | Arsenmedaite | Mn2+6 As5+Si5O18(OH) |
9.BJ.05 | Orientite | Ca8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O |
9.BJ.10 | Rosenhahnite | HCa3[Si3O9(OH)] |
9.BJ.15 | Trabzonite | Ca4(Si3O9)(OH)2 |
9.BJ.20 | Thalénite-(Y) | Y3Si3O10F |
9.BJ.25 | Tiragalloite | Mn2+4As5+Si3O12(OH) |
9.BJ.30 | Medaite | Mn2+6V5+Si5O18(OH) |
9.BJ.35 | Ruizite | Ca2Mn3+2[Si4O11(OH)2](OH)2 · 2H2O |
9.BJ.35 | Taniajacoite | SrCaMn3+2Si4O11(OH)4 · 2H2O |
9.BJ.35 | Strontioruizite | Sr2Mn3+2Si4O11(OH)4 · 2H2O |
9.BJ.40 | Ardennite-(As) | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 |
9.BJ.40 | Ardennite-(V) | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 |
9.BJ.40 | Kannanite | Ca4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 |
9.BJ.40 | Alpeite | Ca4Mn3+2Al2(Mn3+Mg)(SiO4)2(Si3O10)(V5+O4)(OH)6 |
9.BJ.45 | Kilchoanite | Ca6(SiO4)(Si3O10) |
9.BJ.50 | Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
9.BJ.55 | Zunyite | Al13Si5O20(OH,F)18Cl |
9.BJ.60 | Hubeite | Ca2Mn2+Fe3+Si4O12(OH) · 2H2O |
9.BJ.65 | Cassagnaite | (Ca,Mn2+)4(Fe3+,Mn3+,Al)4(V3+,Mg,Al)2(Si3O10)(SiO4)2(OH,O)8 |
9.BJ.70 | Pavlovskyite | Ca8(SiO4)2(Si3O10) |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Prismatine
mindat.org URL:
https://www.mindat.org/min-7252.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Prismatine
Localities for Prismatine
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Antarctica | |
| Can Min 41 (2) +2 other references |
| Grew et al. (2006) |
Canada | |
| personal comm. Dr. E. Grew - L. Horvath +1 other reference |
Germany (TL) | |
| Sauer (1886) +3 other references |
Slovakia | |
| Pauliš P. |
Sweden | |
| prismatine from Stakholmen +2 other references |
Tajikistan | |
| Grew et al. (1998) |
USA | |
| Canadian Mineralogist: 33 (6) +2 other references |
| Darling +1 other reference |
Zimbabwe | |
| Grew et al. (1997) |
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Granulite outcrop, Waldheim, Mittelsachsen, Saxony, Germany