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About KatoptriteHide

black; fire-red (thin sections); red in transmitted light
Specific Gravity:
Crystal System:
From the Greek κάτοπτρου for "mirror" in allusion to the glassy reflections off its cleavages.
This page provides mineralogical data about Katoptrite.

Classification of KatoptriteHide

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination

3 : Miscellaneous

17 : Silicates Containing other Anions
7 : Silicates with vanadate, arsenate or antimonate

Physical Properties of KatoptriteHide

Lustre brilliant
black; fire-red (thin sections); red in transmitted light
red brown
5½ on Mohs scale
On {001}, perfect, micaceous.
4.56 g/cm3 (Measured)    4.65 g/cm3 (Calculated)

Optical Data of KatoptriteHide

Biaxial (-)
RI values:
nα = 1.920 nβ = 1.950 nγ = 1.950
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
r > v strong
Red-brown to orange.
2V small.

Chemical Properties of KatoptriteHide

IMA Formula:
Common Impurities:

Crystallography of KatoptriteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 5.617 Å, b = 23.02 Å, c = 9.079 Å
β = 101.38°
a:b:c = 0.244 : 1 : 0.394
Unit Cell V:
1,150.87 ų (Calculated from Unit Cell)
Crystals commonly tabular {010}, elongated [100], [101], or equant. Minute grains or anhedral masses.

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014705KatoptriteMoore P B, Araki T, Brunton G D (1976) Catoptrite, (Mn2+5Sb5+2)VI(Mn2+8Al4Si2)IVO28, a novel close-packed oxide sheet structure Neues Jahrbuch fur Mineralogie, Abhandlungen 127 47-611976Langban, Sweden0293
CIF Raw Data - click here to close

Type Occurrence of KatoptriteHide

Geological Setting of Type Material:
Metamorphosed limestone.
Associated Minerals at Type Locality:

Synonyms of KatoptriteHide

Other Language Names for KatoptriteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Katoptrite associated with SonoliteMn2+9(SiO4)4(OH)2
1 photo of Katoptrite associated with BlatteriteSb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32
1 photo of Katoptrite associated with Tegengrenite(Mn3+0.5Sb5+0.5)Mg2O4
1 photo of Katoptrite associated with Manganostibite(Mn,Fe)7SbAsO12

Related Minerals - Nickel-Strunz GroupingHide

9.AE.05BerylliteBe3(SiO4)(OH)2 · H2OOrth.
9.AE.10EuclaseBeAl(SiO4)(OH)Mon. 2/m : P21/b
9.AE.15SverigeiteNaMnMgSnBe2(SiO4)3(OH)Orth. mmm (2/m 2/m 2/m) : Imma
9.AE.30ClinohedriteCaZn(SiO4) · H2OMon. m : Bb
9.AE.35StringhamiteCaCu(SiO4) · H2OMon.
9.AE.50SphaerobertranditeBe3(SiO4)(OH)2Mon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.7.3Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)Orth.
17.7.4Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 2/m)
17.7.7TiragalloiteMn2+4As5+Si3O12(OH)Mon. 2/m
17.7.9AsbecasiteCa3(Ti,Sn4+)Be2(AsO3)6(SiO4)2Trig. 3m : P3c1
17.7.10McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21Trig. 3m (3 2/m)
17.7.11KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16Orth. 2 2 2 : C2 2 21
17.7.12SchalleriteMn2+16As3Si12O36(OH)17Trig. 3m : P3m1
17.7.14KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm (2/m 2/m 2/m) : Cmca
17.7.16WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1
17.7.18ParweliteMn10Sb2As2Si2O24Mon. m : Bb
17.7.19LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
17.7.20ChapmaniteFe3+2Sb3+(Si2O5)O3(OH)Mon. m : Bm
17.7.21Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)Trig. 3m : R3m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for KatoptriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Igelström (1885) Bulletin de la Société française de Minéralogie: 8: 143 (as Hematostibite).
Flink (1917) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 39: 426.
Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 206.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1027 (as Hematostibite), 1029-1030 (as Catoptrite).
American Mineralogist (1966): 51: 1484.
American Mineralogist (1977): 62: 396.
127: 47-61.
Moore, P.B. (1966) Catoptrite [katoptrite] and yeatmanite { stuffed pyrochroite structures? American Mineralogist: 51: 1494-1500.
Moore, P.B., T. Araki, and G.D. Brunton (1976) Catoptrite [katoptrite], (Mn2+5 Sb5+2)VI(Mn2+8Al4Si2)IVO28; a novel
close-packed oxide sheet structure. Neues Jahrbuch für Mineralogie, Abhandlungen: 127, 47-61.

Internet Links for KatoptriteHide

Localities for KatoptriteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Örebro County
    • Hällefors
      • Grythyttan
Igelström (1885) Bulletin de la Société française de Minéralogie: 8: 143 (as Hematostibite).; Igelström, L.J. (1886): Polyarsenit och hæmatostibiit. Geologiska Föreningen i Stockholm Förhandlingar 8: 179-181; Moore, P. B. (1972). III. On Igelström's Manganese Arsenates and Antimonates from the Sjö Mine, Grythyttan, Örebro County, Sweden. GFF, 94(3), 423-434.
  • Värmland County
    • Filipstad
      • Långban Ore District
Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. ; K:Gatedal
      • Nordmark District
        • Jakobsberg ore field
MinMag 62, 395; Kjell Gatedal
Nysten, P. (1987). Armangite from Nordmark. GFF, 109(2), 110-110.
Geologiska Föreningens i Stockholm. Förhandlingar, Stockholm (1917): 39: 431; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 787, 1030; Mineralogical Magazine (1978): 42, 133-136; Kjell Gatedal.
Nysten, P. (1994): Alabandit och synadelfit, Nordmark. Långbansnytt. vol 10. [reprinted in: Långbansnytt. De första 20 åren 1983-2003. Långbansällskapet - Skrifter och rapporter. 2, 43]; Nysten, P. (1987). Armangite from Nordmark. GFF, 109(2), 110-110.
Mineralogical Magazine (1998) 62 (3), 395-407
Peter Andresen collection.
Mineral and/or Locality  
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