Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Unnamed (Arseniosiderite-related mineral)

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



Formula:
Ca, Fe, As, O, H


An unnamed Ca-Fe3+-arsenate visually indistinguishable from arseniosiderite. Originally described by Walenta (1998) who later suggested a close relationship to wallkilldellite-Fe (Walenta, 2006).

The X-ray powder diffraction pattern is very similar to that of 'dehydrated yukonite' (cf. Ross & Post, 1997). See also yukonite.

Mechanical mixtures (intergrowths) of this mineral and arseniosiderite are known (U. Kolitsch, unpubl. data).

Classification of Unnamed (Arseniosiderite-related mineral)

mindat.org URL:http://www.mindat.org/min-31363.html
Please feel free to link to this page.
X-Ray Powder Diffraction:
d-spacingIntensity
11.76 (10)
5.68 (7)
3.28 (6)
2.96 (0.5)
2.77 (5)
2.56 (2)
1.641 (4)
Comments:Additional line at 2.25 (0.5b) observed for sample from Rotenbach locality.

Optical Data of Unnamed (Arseniosiderite-related mineral)

Type:Uniaxial (-)
RI values: nω = 1.880 nε = 1.730
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
Pleochroism:Strong
Comments:X(E) ~colourless
Z(O) brown

Chemical Properties of Unnamed (Arseniosiderite-related mineral)

Formula:
Ca, Fe, As, O, H
Essential elements:Ca
All elements listed in formula:As, Ca, Fe, H, O

Other Information

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 Unnamed (Arseniosiderite-related mineral)

Reference List:

- +
Ross, D. R. & Post, J. E. (1997): New data on yukonite. Powder Diffraction 12 (2), 113-116.

Walenta, K. (1998): Ein neues arseniosideritähnliches Mineral aus dem Schwarzwald. Der Erzgräber 12, 41-48. (in German)

Walenta, K. (2006): Über das neue arseniosideritähnliche Mineral aus dem Schwarzwald und seine Beziehungen zum Wallkilldellit-Fe. Erzgräber 20, 15-17. (in German)

Internet Links for Unnamed (Arseniosiderite-related mineral)

Search Engines:
  • Look for Unnamed (Arseniosiderite-related mineral) on Google
  • Look for Unnamed (Arseniosiderite-related mineral) images on Google
    • Mineral Dealers:
  • High-end worldwide specimens & outstanding customer service
  • Search for Unnamed (Arseniosiderite-related mineral) from all mineral dealers at minfind.com
  • webminerals
  • Search for - Unnamed (Arseniosiderite-related mineral) - on e-Rocks Mineral Sales & Auctions
  • Buy fine minerals and gemstones from Pala International
  • Fabre Minerals - search for Unnamed (Arseniosiderite-related mineral) specimens
  • Search for minerals at Heliodor
  • Pricedownminerals.com - Reverse Auctions and Shop
  • Rare and Unusual minerals at Mineralogical Research Company
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Fine Minerals from Weinrich Minerals, Inc.
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Unnamed (Arseniosiderite-related mineral)

    Hide Locality List
    (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.
    Austria
     
    • Upper Austria
      • Eferding
    		: 1545: Mineralisationen (inkl. einer Paragenese von sekundären Fe-Arsenaten) aus dem Steinbruch Großstroheim bei Eferding, Oberösterreich. In: Niedermayr, G. et al. (2008): Neue Mineralfunde aus Österreich LVII. Carinthia II, 198/118, 255.
    Chile
     
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		Uwe Kolitsch (powder X-ray diffraction; intergrown with arseniosiderite)
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Feldberg Mt. area
    		Walenta, K. (1998): Ein neues arseniosideritähnliches Mineral aus dem Schwarzwald. Der Erzgräber 12, 41-48.
        • Sulzburg
    		Walenta, K. (1998): Ein neues arseniosideritähnliches Mineral aus dem Schwarzwald. Der Erzgräber 12, 41-48.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. 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: 21st Jun 2011 18:45:11
    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