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About SchöllhorniteHide

Na0.3CrS2 · H2O
Specific Gravity:
2.74 (Calculated)
Crystal System:
Named after Professor Robert Schöllhorn, Inorganic Chemical Institute, Munster University, Münster, Germany.
Found in an enstatite achondrite meteorite with other chromium-rich minerals.
Schöllhornite has probably formed by terrestrial weathering of caswellsilverite.

Classification of SchöllhorniteHide


2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
B : With alkalies (without Cl, etc.)

9 : AmBnXp, with (m+n):p = 1:1

4 : Oxysulphides

Physical Properties of SchöllhorniteHide

2.74 g/cm3 (Calculated)

Optical Data of SchöllhorniteHide

Colour in reflected light:
gray in air bluish gray in oil

Chemical Properties of SchöllhorniteHide

Na0.3CrS2 · H2O

Crystallography of SchöllhorniteHide

Crystal System:
Cell Parameters:
a = 3.32 Å, c = 26.6 Å
a:c = 1 : 8.012
Unit Cell V:
253.92 ų (Calculated from Unit Cell)
hexagonal setting

Occurrences of SchöllhorniteHide

Paragenetic Mode(s):

Type Occurrence of SchöllhorniteHide

Synonyms of SchöllhorniteHide

Other Language Names for SchöllhorniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Schöllhornite associated with ClinoenstatiteMgSiO3
1 photo of Schöllhornite associated with Kamacite(Fe,Ni)
1 photo of Schöllhornite associated with TroiliteFeS

Related Minerals - Nickel-Strunz GroupingHide

2.FB.05CaswellsilveriteNaCrS2Trig. 3m (3 2/m) : R3m
2.FB.05CronusiteCa0.2CrS2 · 2 H2OTrig. 3m : R3m
2.FB.10ChvilevaiteNa(Cu,Fe,Zn)2S4Trig. 3m : R3m
2.FB.15Orickite2CuFeS2 · H2OHex.
2.FB.20RasvumiteKFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.FB.20PautoviteCsFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
2.FB.25ColimaiteK3VS4Orth. mmm (2/m 2/m 2/m) : Pnma

Related Minerals - Dana Grouping (8th Ed.)Hide 3m (3 2/m) : R3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

4.1BazhenoviteCa8S2(S3)(S2O3)(OH)12 · 20H2OMon. 2/m : P21/b
4.2KermesiteSb2S2OTric. 1 : P1
4.3SarabauiteCaSb3+10S6O10Mon. 2/m : B2/b
4.10ApuaniteFe2+Fe3+4Sb3+4O12STet. 4/mmm (4/m 2/m 2/m) : P42/mbc

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 SchöllhorniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Okada, A., Keil, K., Leonard, B. F., & Hutcheon, I. D. (1984). Schöllhornite, Na0. 3 (H2O) 1 [CrS2] a New Mineral in the Norton County Enstatite Achondrite. Meteoritics, 19, 284.
American Mineralogist (1985): 70: 638-643.

Internet Links for SchöllhorniteHide

Localities for SchöllhorniteHide

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.
  • Eastern Antarctica
    • Queen Maud Land
      • Queen Fabiola Mts (Yamato Mts)
Nakamura-Messenger et al., (2011) The Formation of Wassonite: A New Titanium Monosulfide Mineral in the Yamato 691 Enstatite Chondrite: Workshop on Formation of the First Solids in the Solar System: LPI Contribution No. 1639, p. 9091. (Nov 2011)
  • Kansas
    • Norton Co.
Amer.Min.(1985) 70, 638-643; Okada, A., Keil, K., Leonard, B. F., & Hutcheon, I. D. (1984). Schöllhornite, Na0. 3 (H2O) 1 [CrS2] a New Mineral in the Norton County Enstatite Achondrite. Meteoritics, 19, 284.
  • South Carolina
    • Lee Co.
      • Bishopville
I. Weber and A. Bischoff (1999). Microstructures in Pyroxenes from the Martian Meteorites Zagami and the Achondrites Bishopville (Aubrite), Hammadah Al Hamra 064, and Jalanash (Ureilites). Meteoritics & Planetary Science, vol. 34, Supplement, p. A120.
  • Hadramawt Governorate
LPSC 26,659(1995); Zolensky, M. & A.Ivanov, Chemie der Erde 63,185-246(2003)
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