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Schindlerite

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About SchindleriteHide

Formula:
{(NH4)4Na2(H2O)10}{V10O28}
Colour:
Orange
Lustre:
Sub-Adamantine
Hardness:
2
Specific Gravity:
2.461 (Calculated)
Crystal System:
Triclinic
Name:
Named in honor of Dr. Michael Schindler (b. 1966, Frankfurt, Germany), professor at Laurentian University, Ontario, Canada. He has worked extensively on the structures of vanadium minerals.
New structure type.



Classification of SchindleriteHide

Approved
Notes:
Redefined by the IMA
First Published:
2013
Approval History:
Originally approved as a hydronium mineral (IMA 2012–063), later redefined as an ammonium-bearing decavanadate mineral (Proposal IMA 15-G).

Physical Properties of SchindleriteHide

Sub-Adamantine
Transparency:
Transparent
Colour:
Orange
Streak:
Yellow
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
{010}
Density:
2.461 g/cm3 (Calculated)

Optical Data of SchindleriteHide

Type:
Biaxial (+)
RI values:
nα = 1.740 nβ = 1.790(5) nγ = 1.875
2V:
Measured: 78° (1)
Max Birefringence:
δ = 0.135
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v, very strong
Pleochroism:
Non-pleochroic
Comments:
α- estimated, γ - calculated
Minerals reacted with RI fluids

Chemical Properties of SchindleriteHide

Formula:
{(NH4)4Na2(H2O)10}{V10O28}

Crystallography of SchindleriteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.5143(3) Å, b = 10.4283(5) Å, c = 11.2827(8) Å
α = 68.595(5)°, β = 87.253(6)°, γ = 67.112(5)°
Ratio:
a:b:c = 0.816 : 1 : 1.082
Unit Cell V:
854.08 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.51Å(94)
8.68Å(100)
7.70Å(86)
6.73Å(61)
3.815Å(24)
2.993Å(50)
2.787Å(24)
2.131Å(29)
Comments:
From Type Description.

Type Occurrence of SchindleriteHide

General Appearance of Type Material:
Tabular on {011} and often occur in stacked parallel intergrowths. Individual crystals are up to 0.3 mm in maximum dimension
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 64005, 64006 and 64007
Geological Setting of Type Material:
Oxidation of montroseite-corvusite assemblages in a moist environment
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Hughes, J.M., Marty, J., Nash, B. (2013) Wernerbaurite {[Ca(H2O)7]2(H2O)2(H3O)2}{V10O28}, and schindlerite, {[Na2(H2O)10](H3O)4}{V10O28}, the first hydronium-bearing decavanadate minerals. Canadian Mineralogist: 51: 297-312.

Synonyms of SchindleriteHide

Other InformationHide

IR Spectrum:
none
Notes:
Dissolves instantly in cold, dilute HCl and slowly in water
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 SchindleriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Hughes, J.M., Marty, J., Nash, B. (2013) Wernerbaurite {[Ca(H2O)7]2(H2O)2(H3O)2}{V10O28}, and schindlerite, {[Na2(H2O)10](H3O)4}{V10O28}, the first hydronium-bearing decavanadate minerals. Canadian Mineralogist: 51: 297-312.
Kampf, A.R., Hughes, J.M., Nash, B.P., Marty, J., Cooper, M.A., Hawthorne, F.C., Karpenko, V.Y., Pautov, L.A., Agakhanov, A.A. (2016) Revision of the formulas of wernerbaurite and schindlerite: ammonium- rather than hydronium-bearing decavanadate minerals. Canadian Mineralogist: 54: 555-558.

Internet Links for SchindleriteHide

Localities for SchindleriteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA
 
  • Colorado
    • San Miguel Co.
      • Slick Rock Mining District
Kampf, A. R., Plášil, J., Nash, B. P., & Marty, J. (2019). Ammoniomathesiusite, a new uranyl sulfate–vanadate mineral from the Burro mine, San Miguel County, Colorado, USA. Mineralogical Magazine, 83(1), 115-121.
Kampf, A.R., Hughes, J.M., Marty, J. and Nash, B. (2013) Schindlerite, IMA 2012- 063. CNMNC Newsletter No. 15, February 2013, page 6; Mineralogical Magazine, 77, 1-12.
 
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