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Wilhelmramsayite

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About WilhelmramsayiteHide

Wilhelm Ramsay
Formula:
Cu3FeS3·2H2O
Colour:
dark lead-grey becoming iron-black in air
Lustre:
Metallic
Hardness:
Specific Gravity:
2.75
Crystal System:
Orthorhombic
Name:
For Wilhelm Ramsay (January 20, 1865 - January 6, 1928), an outstanding Finnish geologist, mineralogist and petrographer who completed the first detailed study of the Khibiny-Lovozero alkaline complex.
Compare the chemically similar UM1990-37-S:CuFeHO.


Classification of WilhelmramsayiteHide

Approved
Approval Year:
2004
2.FD.40

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
D : With O, OH, H2O

Physical Properties of WilhelmramsayiteHide

Metallic
Transparency:
Opaque
Colour:
dark lead-grey becoming iron-black in air
Streak:
Black
Hardness:
2½ on Mohs scale
Hardness:
VHN10=111 - 121 kg/mm2 - Vickers
Tenacity:
Flexible
Cleavage:
Perfect
{001}
Fracture:
Step-Like
Density:
2.75 g/cm3 (Measured)    2.84 g/cm3 (Calculated)

Optical Data of WilhelmramsayiteHide

Type:
Anisotropic
Anisotropism:
weak, with bluish and brownish rotation colors
Bireflectance:
Weak
Colour in reflected light:
bluish-grey
Pleochroism:
Weak
Comments:
bluish grey to grey with slight bluish tint

Chemical Properties of WilhelmramsayiteHide

Formula:
Cu3FeS3·2H2O
IMA Formula:
Cu3FeS3 · 2H2O

Crystallography of WilhelmramsayiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmmm
Setting:
Pmmm
Cell Parameters:
a = 5.147(2) Å, b = 7.289(2) Å, c = 5.889(3) Å
Ratio:
a:b:c = 0.706 : 1 : 0.808
Unit Cell V:
220.93 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Flattened on (001) rectangular lamellar and tabular crystals up to 1 x 5 x 6 mm in size.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.12 (40)
4.21 (40)
3.69 (30)
3.104 (100)
2.727 (50)
2.292 (50)
1.897 (70)
1.828 (50)

Type Occurrence of WilhelmramsayiteHide

General Appearance of Type Material:
rectangular platy to tabular crystals to 6 × 5 × 1 mm and is found both as singles and in aggregates
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow (catalog no. 3218/1)
Geological Setting of Type Material:
hyperagpaitic pegmatite as a late hydrothermal phase
Associated Minerals at Type Locality:

Synonyms of WilhelmramsayiteHide

Other Language Names for WilhelmramsayiteHide

Related Minerals - Nickel-Strunz GroupingHide

2.FD.UKI-2004-(OS:BiCuPb)PbCu4Bi4S2O16 (?)Tet.
2.FD.05KermesiteSb2S2OTric. 1 : P1
2.FD.10Viaeneite(Fe,Pb)4S8OMon.
2.FD.20ErditeNaFeS2 · 2H2OMon. 2/m : B2/b
2.FD.25CoyoteiteNaFe3S5 · 2H2OTric.
2.FD.30Haapalaite(Fe2+,Ni)2(Mg,Fe2+)1.61S2(OH)3.22Hex.
2.FD.30Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6Hex.
2.FD.30Yushkinite(Mg,Al)V4+S2(OH)2Hex.
2.FD.35TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
2.FD.45VyalsoviteFeCaAlS(OH)5Orth.
2.FD.50BazhenoviteCa8S2(S3)(S2O3)(OH)12 · 20H2OMon. 2/m : P21/b

Other InformationHide

Magnetism:
Ferromagnetic
Special Storage/
Display Requirements:
In moist air, wilhelmramsayite becomes iron-black
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 WilhelmramsayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Chukanov, N.V., Boldyreva, M.M., Dubinchuk, V.T. (2006): Wilhelmramsayite, Cu3FeS3•2H2O, a new mineral from Khibiny Massif, Kola Peninsula. Proceedings of the Russian Mineralogical Society, 135(1), 38-48.

Internet Links for WilhelmramsayiteHide

Localities for WilhelmramsayiteHide

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.
Russia (TL)
 
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
        • Koashva Mt
Pekov, I.V., Chukanov, N.V., Boldyreva, M.M., Dubinchuk, V.T. (2006): Wilhelmramsayite, Cu3FeS3•2H2O, a new mineral from Khibiny Massif, Kola Peninsula. Proceedings of the Russian Mineralogical Society, 135(1), 38-48.
Mineral and/or Locality  
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