Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Wilhelmramsayite

Big Photo

Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Show Wilhelmramsayite Photos (2)
Formula:
Cu
 
3
FeS
 
3
·2H
 
2
O
System:OrthorhombicColour:dark lead-grey becoming ...
Hardness:2½
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

IMA status:Approved 2004
Strunz 8th edition ID:2/0.0-
Nickel-Strunz 10th (pending) edition ID: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
mindat.org URL:http://www.mindat.org/min-27204.html
Please feel free to link to this page.

Type Occurrence of Wilhelmramsayite

Type Locality:Koashva Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Place of Conservation of Type Material:Fernsman Museum
Geological Setting of type material:hypcragpaitic pegmatite

Physical Properties of Wilhelmramsayite

Lustre:Metallic
Colour:dark lead-grey becoming iron-black
Streak:Black
Hardness (Mohs):2½
Hardness (Vickers):VHN100=111 - 121
Cleavage:Perfect
{001}
Fracture:Step-Like
Density (measured):2.75 g/cm3
Density (calculated):2.84 g/cm3

Crystallography of Wilhelmramsayite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pmmm {P2/m 2/m 2/m}
Cell Parameters:a = 5.147Å, b = 7.289Å, c = 5.889Å
Ratio:a:b:c = 0.706 : 1 : 0.808
Unit Cell Volume:V 220.93 ų (Calculated from Unit Cell)
Morphology:Flattened on (001) rectangular lamellar and tabular crystals up to 1 X 5 x 6 mm in size
X-Ray Powder Diffraction:
d-spacingIntensity
5.12 (40)
4.21 (40)
3.69 (30)
3.104 (100)
2.727 (50)
2.292 (50)
1.897 (70)

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:
Cu
 
3
FeS
 
3
·2H
 
2
O
Essential elements:Cu, Fe, H, O, S
All elements listed in formula:Cu, Fe, H, O, S

Relationship of Wilhelmramsayite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.FD.UKI-2004-(OS:BiCuPb)
PbCu
 
4
Bi
 
4
S
 
2
O
 
16
 (?)
2.FD.05Kermesite
Sb
 
2
S
 
2
O
2.FD.10Viaeneite
(Fe,Pb)
 
4
S
 
8
O
2.FD.20Erdite
NaFeS
 
2
·2H
 
2
O
2.FD.25Coyoteite
NaFe
 
3
S
 
5
·2H
 
2
O
2.FD.30Haapalaite
(Fe
2+
 
,Ni)
 
2
(Mg,Fe
2+
 
)
 
1.61
[(OH)
 
3.22
|S
 
2
]
2.FD.30Valleriite
(Fe
2+
 
,Cu)
 
4
(Mg,Al)
 
3
[(OH,O)
 
6
|S
 
4
]
2.FD.30Yushkinite
(Mg,Al)[(OH)
 
2
 (VS
 
2
)
2.FD.35Tochilinite
Fe
2+
5-6
(Mg,Fe
2+
 
)
 
5
[(OH)
 
10
|S
 
6
]
2.FD.45Vyalsovite
FeCaAl[(OH)
 
5
|S]
2.FD.50Bazhenovite
Ca
 
8
[(OH)
 
12
|S
 
2
O
 
3
|S
 
5
] · 20H
 
2
O

Other Names for Wilhelmramsayite

Synonyms:
IMA2004-033
Other Languages:
German:Wilhelmramsayit

Other Information

Special Storage/
Display Requirements:		In moist air, wilhelmramsayite becomes iron-black
Health Warning: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

Search Engines:
  • Look for Wilhelmramsayite on Google
  • Look for Wilhelmramsayite images on Google
    • External Links:
  • Look for Wilhelmramsayite on Webmineral
  • Look for Wilhelmramsayite on Athena Mineralogy
  • Look for Wilhelmramsayite on Wikipedia
  • Look for Wilhelmramsayite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Wilhelmramsayite in the Natural History Museum (London) online catalogue
    • Mineral Dealers:
  • SpiriferMinerals.com - high quality specimens
  • Find Wilhelmramsayite on www.crystalclassics.co.uk
  • Wendel Minerals - Auktion & Shop
  • Buy from David K Joyce minerals
  • Buy Minerals and Crystals from Crystalarium.com
  • Top quality minerals from Kristalle of California
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fabre Minerals - search for Wilhelmramsayite specimens
  • The Arkenstone - Fine Minerals
  • Buy fine minerals and gemstones from Pala International
  • Search for - Wilhelmramsayite - on e-Rocks Mineral Sales & Auctions
  • Edwards Minerals - Fine Specimens
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Wilhelmramsayite

    Hide Locality List
    The 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. ? 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
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		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.
    Pekov, I.V., and Agakhanov, A.A. (2008): Geology of Ore Deposits 50(7), 583-589.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 2nd Nov 2009 18:31:17