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Schallerite

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About SchalleriteHide

Waldemar Theodore Schaller
Formula:
Mn2+16As3Si12O36(OH)17
Colour:
Light brown, reddish brown
Lustre:
Resinous, Waxy, Greasy
Hardness:
4½ - 5
Specific Gravity:
3.37
Crystal System:
Trigonal
Name:
Named by Robert Burns Gage, Esper Signus Larsen (Senior), and Helen E. Vassar in 1925 after Waldemar Theodore Schaller [August 3, 1882 Oakland, California, USA - September 1, 1967 Washington, DC, USA] mineralogist and ore deposits specialist with the U. S. Geological Survey. USA.
Isostructural with:
Frequently waxy brown masses, small tapered hexagonal crystals rare.
May be confused with friedelite or pyrosmalite-(Mn).

The possible As3+-equivalent is coded as 'UM1986-05-AsO:HMn'.



Classification of SchalleriteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.EE.15

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
72.4.1a.3

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
4 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-, 6-, and 12-membered rings
17.7.12

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

Physical Properties of SchalleriteHide

Resinous, Waxy, Greasy
Transparency:
Translucent
Colour:
Light brown, reddish brown
Streak:
Pale brown
Hardness:
4½ - 5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{0001}
Density:
3.37 g/cm3 (Measured)    3.45 g/cm3 (Calculated)

Optical Data of SchalleriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.704 nε = 1.679
Birefringence:
0.025
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of SchalleriteHide

Formula:
Mn2+16As3Si12O36(OH)17
IMA Formula:
Mn2+16As3+3Si12O36(OH)17
Common Impurities:
Ti,Al,Zn,Mg,Ca,Cl,H2O

Crystallography of SchalleriteHide

Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P3m1
Cell Parameters:
a = 13.43 Å, c = 14.31 Å
Ratio:
a:c = 1 : 1.066
Unit Cell V:
2,235.23 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Tapered pseudohexagonal horizontally striated crystals with pedion.
Comment:
Space group uncertain

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.55 (40)
2.83 (30)
2.67 (60)
2.47 (50)
2.02 (50)
1.975 (40)
1.688 (100)
1.511 (60)
Comments:
12-0253

Type Occurrence of SchalleriteHide

Geological Setting of Type Material:
Veinlets in willemite-franklinite ore, also with rhodonite.

Other Language Names for SchalleriteHide

German:Schallerit
Spanish:Schallerita

Relationship of Schallerite to other SpeciesHide

Other Members of this group:
FriedeliteMn2+8Si6O15(OH,Cl)10Mon. 2/m : B2/m
Mcgillite(Mn,Fe)8Si6O15(OH)8Cl2Mon. 2/m : B2/m
Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Serpentine Subgroup2 photos of Schallerite associated with Serpentine Subgroup on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EE.05BementiteMn7Si6O15(OH)8Mon.
9.EE.10BrokenhilliteMn8Si6O15(OH)10Hex. 6mm : P63mc
9.EE.10Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
9.EE.10FriedeliteMn2+8Si6O15(OH,Cl)10Mon. 2/m : B2/m
9.EE.10Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig.
9.EE.10Mcgillite(Mn,Fe)8Si6O15(OH)8Cl2Mon. 2/m : B2/m
9.EE.15Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
9.EE.20Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2OMon. 2/m : B2/m
9.EE.20TuperssuatsiaiteNa2Fe3Si8O20(OH)2 · 4H2OMon. 2/m : B2/m
9.EE.20YofortieriteMn5Si8O20(OH)2 · 8-9H2OMon. 2/m : B2/m
9.EE.20WindhoekiteCa2Fe3+2.67[Si8O20](OH)4 · 10H2O Mon. 2/m : B2/m
9.EE.25Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2OOrth.
9.EE.25LoughliniteNa2Mg3Si6O16 · 8H2OOrth.
9.EE.25SepioliteMg4(Si6O15)(OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.EE.25Kalifersite(K,Na)5Fe3+7Si20O50(OH)6 · 12H2OTric.
9.EE.30GyroliteNaCa16Si23AlO60(OH)8 · 14H2OTric.
9.EE.30OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
9.EE.30TungusiteCa4Fe2Si6O15(OH)6
9.EE.35Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
9.EE.35Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
9.EE.40NatrosiliteNa2Si2O5Mon.
9.EE.45MakatiteNa2Si4O8(OH)2 · 4H2OMon. 2/m : P21/b
9.EE.50VarennesiteNa8Mn2Si10O25(OH,Cl)2 · 12H2OOrth.
9.EE.55RaiteNa4Mn2+3Ti0.25Si8O20(OH)2 · 10H2OOrth. 2 2 2 : C2 2 2
9.EE.60IntersiliteNa6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2OMon.
9.EE.65Shafranovskite(Na,K)6(Mn,Fe)3Si9O24 · 6H2OTrig.
9.EE.65ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig.
9.EE.70ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
9.EE.75Minehillite(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16Hex.
9.EE.80Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2OTric. 1 : P1
9.EE.80Martinite(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2OTric. 1 : P1
9.EE.85Lalondeite(Na,Ca)6(Ca,Na)3Si16O38(F,OH)2·3H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

72.4.1a.1Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
72.4.1a.2Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.7.1SuzukiiteBaVSi2O7Orth.
17.7.2FranciscaniteMn2+6(V5+,☐)2(SiO4)2(O,OH)6Hex.
17.7.3Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)
17.7.4Ardennite-(As)Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6Orth. mmm (2/m 2/m 2/m)
17.7.5MedaiteMn2+6V5+Si5O18(OH)Mon.
17.7.6JohninnesiteNa2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2Tric.
17.7.7TiragalloiteMn2+4As5+Si3O12(OH)Mon. 2/m
17.7.8DixeniteCuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6Trig.
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
17.7.13Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
17.7.14KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm (2/m 2/m 2/m) : Cmca
17.7.15YeatmaniteZn6Mn2+9Sb5+2(SiO4)4O12Tric.
17.7.16WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1
17.7.17Katoptrite(Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20Mon. 2/m : B2/m
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 SchalleriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gage, R.B., Larsen, E.S., Vassar, H.E. (1925): Schallerite, a new arseno-silicate mineral from Franklin Furnace, New Jersey. American Mineralogist 10, 9-11.
Frondel, C. and L.H. Bauer (1953): Manganpyrosmalite and its polymorphic relation to friedelite and schallerite. Am. Mineral., 38, 755-760.
Hey, M.H. (1956): The empirical unit-cell contents of the friedelite family. American Mineralogist 41, 134-138.
Dunn, P.J., D.R. Peacor, J.A. Nelen, and J.A. Norberg (1981): Crystal-chemical data for schallerite, caryopilite and friedelite from Franklin and Sterling Hill, New Jersey. Am. Mineral., 66, 1054-1062.
Kato, T., Watanabe, I. (1992): The crystal structures of schallerite and friedelite. Yamaguchi University, College of Arts Bulletin 26, 51-63.

Internet Links for SchalleriteHide

Localities for SchalleriteHide

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.
Austria
 
  • Tyrol
    • East Tyrol
      • Kals valley
Abrecht, J. (1990) An As-rich manganiferous mineral assemblage from the Ködnitz Valley (Eastern Alps, Austria): Geology, mineralogy, genetic considerations, and implications for metamorphic Mn deposits. Neues Jahrbuch für Mineralogie, Monatshefte 1990, 363-375.
Kazakhstan
 
  • Karaganda
    • Karazhal
      • Ushkatyn deposits (Ushkatan)
Kayupova, M. M. (1964) Pyrosmalite from the Dzhumart and Ushkatyn Deposits, Central Kazakhstan. Translated from: Pirosmalit iz mestorozhdeniy Dzhumart i Ushkatyn v Tsentral'nom Kazakhstane. Doklady Akademii Nauk SSSR, 1964, Vol. 159, No.3, pp.560-663.
Romania
 
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
http://minerals-of-the-carpathians.eu
Russia
 
  • Eastern-Siberian Region
    • Khakassia Republic (Khakassy Republic; Khakassiya Republic)
      • Askizsky Rayon
        • Askiz ore district
Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356.
Kassandrov, E. G., & Mazurov, M. P. (2009). Magmatogenic manganese ores of the South Minusa Intermontane Trough. Geology of Ore Deposits, 51(5), 356.
Sweden
 
  • Värmland
    • Filipstad
      • Persberg district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13 Nysten, P. (1995): The Harstigen Mine. A Compilation. Långbanssällskapet. Skrifter och rapporter n:o 1
USA
 
  • Massachusetts
    • Hampshire Co.
      • Plainfield
"Western Massachusetts Mineral Localities" by Alan Plante, Valley Geology Press, 1992.
  • New Jersey
    • Sussex Co.
      • Franklin mining district
        • Franklin
Dunn, P.J., et al: Am.Min.:66:1054-1062 (1981); Foshag W.F., et al: USNM Proceedings:70:Art #20:1-6 (1927); Gage, et al: Am.Min.:10:9-11 (1925); Bauer L.H. & Berman, H.: Am.Min.:13:341-348 (1928); Frondel, C. & Bauer, Am.Min.:38:755-760 (1953); Palalche(1
Dunn(1995):Pt4:481.
Mineral and/or Locality  
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