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Unnamed (Arseniosiderite-related mineral)

A material that is NOT an approved mineral species
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About Unnamed (Arseniosiderite-related mineral)Hide

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) and that of Unnamed (Pb-Fe-As-Cl-Si-Na-O-H).
See also yukonite.

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


Unique IdentifiersHide

Mindat ID:
31363
Long-form identifier:
mindat:1:1:31363:6
GUID
(UUID V4):
f0a86993-96d9-4b98-95ac-3dc36bbc1ba7

Optical Data of Unnamed (Arseniosiderite-related mineral)Hide

Type:
Uniaxial (-)
RI values:
nω = 1.880 nε = 1.730
Max Birefringence:
δ = 0.150
Image 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)Hide

Formula:
Ca, Fe, As, O, H

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.76 Å(10)
5.68 Å(7)
3.28 Å(6)
2.96 Å(0.5)
2.77 Å(5)
2.56 Å(2)
1.641 Å(4)
Comments:
Additional line at 2.25 (0.5b) observed for sample from Rotenbach locality.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Unnamed (Arseniosiderite-related mineral) associated with ParasymplesiteFe2+3(AsO4)2 · 8H2O

Other InformationHide

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 Unnamed (Arseniosiderite-related mineral)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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)Hide

Localities for Unnamed (Arseniosiderite-related mineral)Hide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Austria
 
  • Upper Austria
    • Eferding District
      • Stroheim
Kolitsch, U. & Schachinger, T. (2008): 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
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
Uwe Kolitsch (powder X-ray diffraction; intergrown with arseniosiderite)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Feldberg
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.
      • Ortenaukreis
        • Oberwolfach
Draxler, V. , Möhn, G. & Desor, J. (05/21) SEM-EDS & digital PXRD
 
矿物 and/or 产地  
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