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Rostite

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About RostiteHide

Formula:
Al(SO4)(OH) · 5H2O
Crystal System:
Orthorhombic
Name:
Named in 1979 by František Čech in honor of Rudolf Rost [1912 Libušíně near Kladna, Czech Republic – 1999 Prague, Czech Republic], Professor of Mineralogy, at the Charles University, Prague, Czech Republic, who had re-characterized the mineral in 1937, considering it to be identical to tamarugite.
Dimorph of:
First observed in a burning coal dump.

Compare also the related khademite.
Note that "rostite" from the type locality contains considerable F (4.25 wt.%) (Zacek & Povondra, 1988) and subsequently was identified as khademite (Zacek et al., 1995).


Classification of RostiteHide

Approved
7.DB.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
31.9.11.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
25.6.1

25 : Sulphates
6 : Sulphates of Al and Tl

Optical Data of RostiteHide

Type:
Biaxial (+)
RI values:
nα = 1.461 nβ = 1.470 nγ = 1.484
Max Birefringence:
δ = 0.023
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Chemical Properties of RostiteHide

Formula:
Al(SO4)(OH) · 5H2O

Crystallography of RostiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Comment:
Space group Pcab. Range: a = 11.169–11.187, b = 13.039–13.060, c = 10.871–10.893 A.

Type Occurrence of RostiteHide

Synonyms of RostiteHide

Other Language Names for RostiteHide

German:Rostit
Simplified Chinese:斜方铝矾
Spanish:Rostita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Clairite2 photos of Rostite associated with Clairite on mindat.org.
Ilsemannite2 photos of Rostite associated with Ilsemannite on mindat.org.
Metavoltine1 photo of Rostite associated with Metavoltine on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DB.05AubertiteCuAl(SO4)2Cl · 14H2OTric. 1
7.DB.05Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
7.DB.05Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2OTric.
7.DB.10KhademiteAl(SO4)F · 5H2OOrth. mmm (2/m 2/m 2/m)
7.DB.15JurbaniteAl(SO4)(OH) · 5H2OMon.
7.DB.20Minasragrite(V4+O)(SO4) · 5H2OMon. 2/m
7.DB.20Orthominasragrite(V4+O)(SO4) · 5H2OOrth. mm2 : Pmn21
7.DB.20Anorthominasragrite(V4+O)(SO4) · 5H2OTric. 1 : P1
7.DB.25Bobjonesite(V4+O)(SO4) · 3H2OMon. 2/m
7.DB.30AmarantiteFe3+2(SO4)2O · 7H2OTric. 1
7.DB.30HohmanniteFe3+2(SO4)2O · 8H2OTric. 1
7.DB.30MetahohmanniteFe3+2(SO4)2O · 4H2OTric. 1 : P1
7.DB.35AluminocopiapiteAl2/3Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CalciocopiapiteCaFe4(SO4)6(OH)2 · 10H2OTric. 1 : P1
7.DB.35CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35CuprocopiapiteCuFe4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35FerricopiapiteFe5(SO4)6O(OH) · 20H2OTric. 1 : P1
7.DB.35MagnesiocopiapiteMgFe3+4(SO4)6(OH)2 · 20H2OTric. 1 : P1
7.DB.35ZincocopiapiteZnFe3+4(SO4)6(OH)2 · 18H2OTric.

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

31.9.11.1KhademiteAl(SO4)F · 5H2OOrth. mmm (2/m 2/m 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.6.2JurbaniteAl(SO4)(OH) · 5H2OMon.
25.6.3KhademiteAl(SO4)F · 5H2OOrth. mmm (2/m 2/m 2/m)
25.6.4Meta-aluminiteAl2(SO4)(OH)4 · 5H2O
25.6.5AluminiteAl2(SO4)(OH)4 · 7H2OMon. 2/m : P21/b
25.6.6Meta-alunogenAl2(SO4)3 · 12H2O
25.6.7AlunogenAl2(SO4)3 · 17H2OTric. 1
25.6.8FelsőbányaiteAl4(SO4)(OH)10 · 4H2OMon. 2 : P21
25.6.9BasaluminiteAl4(SO4)(OH)10 · 4H2OHex.
25.6.10HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2OMon.
25.6.11ZaheriteAl12(SO4)5(OH)26 · 20H2OTric.
25.6.12TamarugiteNaAl(SO4)2 · 6H2OMon. 2/m
25.6.13MendoziteNaAl(SO4)2 · 11H2OMon. 2/m
25.6.14Alum-(Na)NaAl(SO4)2 · 12H2O
25.6.15NatroaluniteNaAl3(SO4)2(OH)6Trig. 3m : R3m
25.6.16KaliniteKAl(SO4)2 · 11H2OMon. 2/m : B2/b
25.6.17Alum-(K)KAl(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
25.6.18AluniteKAl3(SO4)2(OH)6Trig. 3m : R3m
25.6.19Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6Trig. 3m (3 2/m) : R3m
25.6.20Tschermigite(NH4)Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3

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 RostiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1975): 60: 486.
American Mineralogist (1979): 64: 1331.
Zacek, V. & Povondra, P. (1988): Neues Jahrbuch für Mineralogie, Monatshefte (1988): 10: 479-480.
American Mineralogist (1989): 74: 951.
Zacek, V., Oplustil, S., Mayova, A. & Meyer, F. R. (1995): Die Mineralien von Kladno in Mittelböhmen, Tschechische Republik. Mineralien-Welt 6 (1), 13-30 (in German).

Internet Links for RostiteHide

Localities for RostiteHide

ⓘ - 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.
Canada
 
  • Newfoundland and Labrador
    • Newfoundland
      • Baie Verte Peninsula
        • Tilt Cove
Norman Wilson Personal Collection
Czech Republic (TL)
 
  • Central Bohemia Region
    • Kladno
      • Libušin
Neues Jahrb.Min.,Mh.(1979) 193-196
Germany
 
  • North Rhine-Westphalia
    • Aachen
      • Alsdorf
Witzke, T., de Wit, F., Kolitsch, U. and Blaß, G. (2015): Mineralogy of the Burning Anna I Coal Mine Dump, Alsdorf, Germany. Chapter 7, pp. 203-240, in: Stracher, G. B., Prakash, A. and Sokol, E. V.: Coal and Peat Fires: A Global Perspective, Volume 3: Case Studies - Coal Fires, Elsevier, 786 pp.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium; Lavreotiki Municipality)
Skarpelis, N. and Argyraki, A. (2009): The geology and origin of supergene ores in Lavrion (Attica, Greece). Resource Geology, 59, 1-14.
Iceland
 
  • Northeastern Region
    • Myvatn
Carson, G. L. (2015). Hydrothermal Acid-sulfate Alteration at Krafla and Námafjall, Ne Iceland: Implications for Gusev Crater and Meridiani Planum, Mars. Masters thesis, University of Wisconsin-Milwaukee.
Italy
 
  • Tuscany
    • Siena Province
      • Chiusdino
Sabelli C. (1984) - I minerali delle Cetine di Cotorniano (SI); I solfati dimorfi jurbanite e rostite. Periodico di Mineralogia, Roma, pp. 53-65 and Brizzi G., Ciselli I, Santucci A. (1986) - Ultime novità da le Cetine di Cotorniano - Riv. Miner. Ital., Milano, fasc. 3, pp.145-155; Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p.
Poland
 
  • Upper Silesia (Śląskie)
    • Upper Silesian Coal Basin
      • Rybnik Coal Area
        • Radlin
Łukasz Kruszewski (2012) Unique chloride assemblage of exhalative origin from burning coal-mining dump in Radlin (Rybnik Coal Area, S Poland). Mineralogical Society of Poland Special Papers 40
Tajikistan
 
  • Viloyati Sogd (Viloyati Sughd; Viloyati Khodzhent; Viloyati Leninabad)
    • Zeravshan Range
      • Yagnob River
PXRD (Lukasz Kruszewski)
USA
 
  • Alaska
    • Valdez-Cordova Borough
      • Chisana District
U. S. Geological Survey Open-File Report 02-195
Mineral and/or Locality  
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