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Wilhelmramsayite

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Wilhelm Ramsay
Formula:
Cu3FeS3·2H2O
System:
Orthorhombic
Colour:
dark lead-grey becoming ...
Hardness:
Name:
For Wilhelm Ramsay (January 20, 1865-January 6, 1928), an outstanding Finnish geologist, mineralogist and petrographer who completed first detailed study of the Khibiny-Lovozcro alkaline complex.
This page provides mineralogical data about Wilhelmramsayite.

Classification of Wilhelmramsayite

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
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http://www.mindat.org/min-27204.html
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Type Occurrence of Wilhelmramsayite

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

Physical Properties of Wilhelmramsayite

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

Crystallography of Wilhelmramsayite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmmm
Space Group 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 Volume:
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 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)

Optical Data of Wilhelmramsayite

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 Wilhelmramsayite

Formula:
Cu3FeS3·2H2O
All elements listed in formula:

Relationship of Wilhelmramsayite to other Species

2.FD.UKI-2004-(OS:BiCuPb)PbCu4Bi4S2O16 (?)
2.FD.05KermesiteSb2S2O
2.FD.10Viaeneite(Fe,Pb)4S8O
2.FD.20ErditeNaFeS2 · 2H2O
2.FD.25CoyoteiteNaFe3S5 · 2H2O
2.FD.30Haapalaite(Fe2+,Ni)2(Mg,Fe2+)1.61S2(OH)3.22
2.FD.30Valleriite(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
2.FD.30Yushkinite(Mg,Al)V4+S2(OH)2
2.FD.35TochiliniteFe2+5-6(Mg,Fe2+)5S6(OH)10
2.FD.45VyalsoviteFeCaAlS(OH)5
2.FD.50BazhenoviteCa8S2(S3)(S2O3)(OH)12 · 20H2O

Other Names for Wilhelmramsayite

Name in Other Languages:

Other Information

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 Wilhelmramsayite

Reference List:
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 Wilhelmramsayite

Localities for Wilhelmramsayite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Russia (TL)
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • 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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