Mindat Logo

Koechlinite

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



Formula:
Bi
 
2
MoO
 
6
System:OrthorhombicColour:Greenish yellow, white ...
Name:Named in 1914 by waldemar Theodore Schaller in honor of Rudolf Ignatz Koechlin [November 11, 1862 Wien, Austria - February 11, 1939 Wien, Austria], Austrian mineralogist and Curator of the mineral collection of the Vienna Natural History Museum (former Hof-Museum), Vienna, Austria.


A rare secondary mineral occurring in the oxidation zones of Bi-Mo deposits.

The molybate analogue of russellite.

Classification of Koechlinite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/G.01-60
Nickel-Strunz 10th (pending) edition ID:4.DE.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
E : With medium-sized cations; with various polyhedra
Dana 8th edition ID:48.2.2.1

48 : ANHYDROUS MOLYBDATES AND TUNGSTATES
2 : A2XO4
Hey's CIM Ref.:27.3.4

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
mindat.org URL:http://www.mindat.org/min-2235.html
Please feel free to link to this page.

Type Occurrence of Koechlinite

Type Locality:Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
Place of Conservation of Type Material:Harvard University, Cambridge, Massachusetts: #64801. U.S. National Museum of Natural History, Washington, D.C., USA: R6411, 93646.
Year of Discovery:1914

Physical Properties of Koechlinite

Lustre:Silky
Diaphaneity (Transparency):Transparent
Colour:Greenish yellow, white to light gray; greenish yellow in transmitted light
Streak:Pale greenish yellow
Tenacity:Very brittle
Cleavage:Perfect
On {010}, perfect on {0kl}, imperfect.
Density (calculated):8.26 g/cm3

Crystallography of Koechlinite

Crystal System:Orthorhombic
Class (H-M):mm2 - Pyramidal
Space Group:Pna21
Cell Parameters:a = 5.4822Å, b = 16.1986Å, c = 5.5091Å
Ratio:a:b:c = 0.338 : 1 : 0.34
Unit Cell Volume:V 489.23 ų (Calculated from Unit Cell)
Z:4
Morphology:Crystals thin, square to rectangular plates striated parallel [010] and laths flattened on {010}; spheroidal agrgegates of laths; massive or earthy incrustations.
Twinning:{101} as twin plane, penetration and contact twins. Composition face {101} or {010} in contact twins.
Comment:Pseudotetragonal; Space Group based on synthetic material.
Epitaxi Comments:Parallel growths with an unidentified orthorhombic mineral reported.

Optical Data of Koechlinite

Type:Biaxial (-)
RI values: nα = 2.520 nβ = 2.610 nγ = 2.670
Maximum Birefringence:δ = 0.150

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:none
Pleochroism:Weak
Comments:In shades of greenish yellow.
Comments:2V measured = large.

Chemical Properties of Koechlinite

Formula:
Bi
 
2
MoO
 
6
Simplified for copy/paste:Bi2MoO6
Essential elements:Bi, Mo, O
All elements listed in formula:Bi, Mo, O

Relationship of Koechlinite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DE.05Downeyite
SeO
 
2
4.DE.10Koragoite
(Mn
2+
 
,Fe
3+
 
)
 
3
(Nb,Ta,Ti)
 
2
(Nb,Mn)
 
2
(W,Ta)
 
2
O
 
20
4.DE.15Russellite
Bi
 
2
WO
 
6
4.DE.15Tungstibite
Sb
3+
2
WO
 
6
4.DE.20Tellurite
TeO
 
2
4.DE.25Paratellurite
TeO
 
2
4.DE.30Bismutotantalite
Bi(Ta,Nb)O
 
4
4.DE.30Bismutocolumbite
Bi(Nb,Ta)O
 
4
4.DE.30Cervantite
Sb
3+
 
Sb
5+
 
O
 
4
4.DE.30Stibiotantalite
Sb(Ta,Nb)O
 
4
4.DE.30Stibiocolumbite
Sb(Nb,Ta)O
 
4
4.DE.30Clinocervantite
Sb
3+
 
Sb
5+
 
O
 
4
4.DE.35Baddeleyite
ZrO
 
2
Related Minerals - Hey's Index Grouping:

- +
27.3.1Lindgrenite
Cu
 
3
(MoO
 
4
)
 
2
(OH)
 
2
27.3.2Powellite
Ca(MoO
 
4
)
27.3.3Wulfenite
Pb(MoO
 
4
)
27.3.5Sedovite
U(MoO
 
4
)
 
2
27.3.6Mourite
UMo
 
5
O
 
12
(OH)
 
10
27.3.7Iriginite
(UO
 
2
)Mo
 
2
O
 
7
· 3H
 
2
O
27.3.8Umohoite
(UO
 
2
)MoO
 
4
· 2H
 
2
O
27.3.9Moluranite
H
 
4
U
4+
 
(UO
 
2
)
 
3
(MoO
 
4
)
 
7
· 18H
 
2
O
27.3.10Cousinite
MgU
 
2
Mo
 
2
O
 
11
· 6H
 
2
O
27.3.11Calcurmolite
(Ca,Na)
 
2
(UO
 
2
)
 
3
Mo
 
2
(O,OH)
 
11
· nH
 
2
O
27.3.12Tengchongite
CaO · 6UO
 
3
· 2MoO
 
3
· 12H
 
2
O
27.3.13Kamiokite
Fe
 
2
Mo
 
3
O
 
8
27.3.14Ferrimolybdite
Fe
 
2
(MoO
 
4
)
 
3
· nH
 
2
O

Other Names for Koechlinite

Other Languages:
German:Koechlinit
Russian:Кехлинит
Simplified Chinese:钼铋矿
Spanish:Koechlinita
Traditional Chinese:鉬鉍礦

Other Information

Other Information:Readily soluble in HCl, less so in HNO3.
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 Koechlinite

Reference List:

- +
Schaller (1916) U.S. Geological Survey Bulletin 610: 10.

Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 212.

Frondel, C. (1943) New data on agricolite, koechlinite, and the bismuth arsenates. American Mineralogist, 28, 536–540.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1092-1093.

Zemann, J. (1956): Die Kristallstruktur von Koechlinit, Bi2MoO6. Contributions to Mineralogy and Petrology 5(2), 139-145 (in German).

Yushkin, N.P. (1969) The first find of koechlinite in the USSR. Doklady Acad. Nauk SSSR, 189, 852–855 (in Russian).

Teller, R.G., J.F. Brazdil, R.K. Grasselli, and J.D. Jorgensen (1984) The structure of bismuth molybdate,
Bi2MoO6, by powder neutron diffraction. Acta Crystallographica (1984): C40: 2001-2005.

Acta Crystallographica: B29: 2436-2438.

Internet Links for Koechlinite

Search Engines:
  • Look for Koechlinite on Google
  • Look for Koechlinite images on Google
  • External Links:
  • Look for Koechlinite on Webmineral
  • Look for Koechlinite on Athena Mineralogy
  • Look for Koechlinite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Koechlinite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Buy from McDougall Minerals
  • rare and unusual minerals mainly crystallized
  • Buy RARE Minerals from Rocks of Africa
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy minerals from YourMineralCollection
  • Wilensky Fine Minerals
  • Top quality minerals from Kristalle of California
  • Fine and rare minerals from mintreasure.com
  • Fine Minerals from Weinrich Minerals, Inc.
  • Search for Koechlinite on Well-Arranged Molecules
  • Fine minerals from bisbeeborn.com
  • SpiriferMinerals.com - high quality low prices
  • Localities for Koechlinite

    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.
    Australia
     
    • New South Wales
      • Bourke Co.
        • Ardlethan
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1093.
      • Gough Co.
        • Elsmore
    Rankin, J., Lawrence, L. J., Sharpe, J. L. and Williams, P. A. (2002): Rare secondary bismuth, tungsten and molybdenum minerals from Elsmore, New England district of New South Wales. Austral. J. Mineral. 8, 55-60.; Rankin, J., Lawrence, L. J., Sharpe, J. L. and Williams, P. A. (2002): Rare secondary bismuth, tungsten and molybdenum minerals from Elsmore, New England district of New South Wales. Austral. J. Mineral. 8, 55-60.
        • Kingsgate
    Sharpe, J.L., & Williams P.A. (2004) - Secondary bismuth and molybdenum minerals from Kingsgate, New England district of New South Wales.- Australian Journal of Mineralogy, vol.10, n°1.
    • Victoria
      • Pittong
    W.D.Birch 2001. A note on koechlinitr from Pittong, Victoria. Australian Journal of Mineralogy: 7(2), pp. 77-79
      • Thologolong
    Museum Victoria Mineralogy Collection
    • Western Australia
      • Coolgardie Shire
        • Coolgardie
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1093.
      • Cue Shire
        • Poona
    Hodge, L.C.(1970): Russellite- a second occurrence, Mineralogical Magazine, 1970: 37: 705-707
    China
     
    • Fujian Province
      • Ningde Prefecture
        • Fu'an Co.
    http://www.minsocam.org/ammin/AM76/AM76_665.pdf
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Horní Slavkov (Schlaggenwald)
          • Krásno (Schönfeld)
            • Vysoký Kámen
    Sejkora, J., Ondruš, P., Fikar, M., Veselovský, F., Mach, Z. & Gabašová, A. (2006): New data on mineralogy of the Vysoký Kámen deposits near Krásno, Slavkovský les area, Czech Republic. Journal of the Czech Geological Society 51, 43-55.
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
    Jiří Sejkora - Sekundární minerály Bismutu z povrchového výchozu
            • Knöttel area (Knötel; Knödel; Knödlberg)
    J.Sejkora, M.Kotrly - Sekundární minerály Bismutu z povrvhového výchozu křemenného pně. 1998
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); WALENTA, K. (1993): Neue Mineralfunde von der Grube Clara (5. Folge). - Lapis 18 (1), 16-23.
    • Saxony
      • Erzgebirge
        • Schneeberg District
          • Neustädtel
    Journal of the Washington Academy of Science (1914): 4, 354-356; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1093; Wittern: "Mineralfundorte in Deutschland", 2001
    Lapis 30(7/8):41-70 (2005)
      • Oberlausitz
        • Görlitz
          • Königshain
    Witzke, T. & Giesler, T. (2007): Wismut-Mineralien aus dem Königshainer Granit, Lausitz.- Mineralien-Welt 18(4), 14-19
          • Thiemendorf
    Witzke, T. & Giesler, T. (2007): Wismut-Mineralien aus dem Königshainer Granit, Lausitz.- Mineralien-Welt 18(4), 14-19
    Italy
     
    • Sardinia
      • Cagliari Province
        • Sarroch
    Orlandi, P., Demartin, F., Pasero, M., Leveret,P., William, P.A., Hibbs,D.E., (2011), Gelosaite BiMo6+(2–5x)Mo5+6xO7(OH)·H2O (0 ≤ x ≤ 0.4), a new mineral from Su Senargiu (CA), Sardinia, Italy, and a second occurrence from Kingsgate, New England, Australia. Am. Min.: 96: 268 - 273.
    Orlandi, P. & Campostrini, I. (2005): Zibaldone. Aggiornamenti di mineralogia italiana 2004. Rivista Mineralogica Italiana, 3/2005, 184-191.
      • Carbonia-Iglesias Province
        • Domusnovas
          • Oridda
    AA. VV., 1996. Collezionare minerali. Hobby & Work
    Japan
     
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
          • Nakatsugawa City
            • Hirukawa
    Ryoichi SADANAGA and Michiaki BUNNO (1974) THE WAKABAYASHI MINERAL COLLECTION Bulletin No. 7 The University Museum, The University of Tokyo; 浜地忠男, & 谷正巳. (1961). 岐阜県苗木地方ウラン調査報告. 纐纈山および西大洞地区の砂鉱. 地調月報, 11, 34-40.
      • Kanto region
        • Tochigi Prefecture
          • Nikko City
            • Ashio-machi
    Ryoichi SADANAGA and Michiaki BUNNO (1974) THE WAKABAYASHI MINERAL COLLECTION Bulletin No. 7 The University Museum, The University of Tokyo
    Kazakhstan
     
    • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
      • Betpakdala Desert (Bet-Pak-Dal Desert)
    Jeremolenko, V. (2002): Kara-Oba: Mineralogische Perle der Betpak-Ebene bei Dzhambul, Kasachstan. Lapis 27 (4), 13-34 + 50
    Mexico
     
    • Sonora
      • Mun. de Imuris
    dan weinrich
    South Africa
     
    • Gauteng Province
      • Pretoria
    S. Weinert (2006) Locality Data Sheet ML35 (South African Micromount Society); Rocks & Minerals 83:5 pp 410-421
    • Limpopo Province
      • Bushveld Complex
        • Waterberg District
          • Mokopane (Potgietersrus)
    Minerals of South Africa
    Spain
     
    • Extremadura
      • Badajoz
        • Valle de la Serena
    Calvo, M. (2009). Minerales y Minas de España. Vol. IV, Óxidos e Hidróxidos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 752 pp.
    UK
     
    • England
      • Cumbria
        • South Eastern Region (Westmorland)
          • Eastern Fells
            • Shap
    M.Wirth collection
    USA
     
    • Arizona
      • Gila Co.
        • Globe-Miami District
          • Miami-Inspiration District
            • Inspiration
              • Miami-Inspiration deposit
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268.
    • California
      • Plumas Co.
        • Diamond Mts
          • Last Chance District
            • Adams Peak
    Mineralogical Record (1998): 29: 165.
    Dunning, G.E., Cooper, J.F. (2005) Mineralogy of the Spring Creek area, Last Chance mining district, Plumas County, California. Axis: 1: 1-30.
    • Colorado
      • Lake Co.
        • Climax District
          • Climax
    Minerals of Colorado (1997) Eckels, E. B.
    • Nevada
      • Nye Co.
        • Round Mountain District
    [MinRec 22:181]
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: August 21, 2014 18:50:23
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds