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Dinilawiite

A valid IMA mineral species
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EditAdd SynonymEdit CIF structuresClear Cache
New structure type based on chains of linkedOPb4 tetrahedra andAl(OH)6 octahedra. The chains incorporate the cubane-likePb4(OH)4 structural motif that is common in other minerals discovered at the Redmond Mine.

Note that the chemical formula originally submitted to (and approved by) the IMA-CNMNC that included acid thiosulfate was incorrect. The corrected chemical formula was given in Kampf et al. (2024).


Unique Identifiers
Approval year:
2023

Approval history:
IMA No. 2023-061
Type description reference:
Kampf, Anthony R.; Smith, Jason B.; Hughes, John M.; Ma, Chi; Emproto, Christopher (2024) New Minerals from the Redmond Mine, North Carolina, USA: VIII. Dinilawiite, a Thiosulfate Mineral with an Open Framework Structure.The Canadian Journal of Mineralogy and Petrology, 62 (6). 871-879doi:10.3749/2400016

Classification of Dinilawiite

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
J : Thiosulfates
A : Thiosulfates of Pb

Mineral Symbols
Colour:
Colorless
Comment:
Sometimes appears light reddish brown due to inclusions or transmitted color of the matrix
Streak:
White
Hardness:
2 onMohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Comment:
curved
Density:
4.727 g/cm3 (Calculated)
Comment:
Density given for empirical formula using SCXRD cell parameters.

Optical Data of Dinilawiite
Surface Relief:
Moderate
Dispersion:
moderate r > v dispersion
Pleochroism:
Non-pleochroic
Comments:
β = 1.824 (calc), γ = 1.854 (calc)

Chemistry of Dinilawiite

Crystallography of Dinilawiite
General Appearance of Type Material:
ubiquitously twinned tablets, up to about 0.4 mm across, with angled striations. Crystals always occur in tightly intergrown subparallel clusters.
Place of Conservation of Type Material:
collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76289, 76290, 76291 and 76292
Geological Setting of Type Material:
Weathered galena-sphalerite-chalcopyrite-quartz vein
Associated Minerals at Type Locality:
ChalcopyriteGalenaHydroredmonditeQuartzSphalerite
SteverustiteSulfatoredmonditeSusannite
Reference:
Kampf, Anthony R.; Smith, Jason B.; Hughes, John M.; Ma, Chi; Emproto, Christopher (2024) New Minerals from the Redmond Mine, North Carolina, USA: VIII. Dinilawiite, a Thiosulfate Mineral with an Open Framework Structure.The Canadian Journal of Mineralogy and Petrology, 62 (6). 871-879doi:10.3749/2400016

Other Language Names for Dinilawiite

Common AssociatesTric.1 :P17.JA.BoojumitePb8O4(OH)2(S2O3)3Orth.mmm(2/m2/m2/m) :Pnma7.JA.Finescreekite[Pb4(OH)4](S2O3)2Orth. 222 :P2121217.JA.BoevskitePb4(TeO3)2(SO4)(S2O3)Orth.mmm(2/m2/m2/m) :Pnma7.JA.Redmondite[Pb8O2Zn(OH)6](S2O3)4Mon. 2/m :P21/b7.JA.Hydroredmondite[Pb8O2Zn(OH)6](S2O3)4 · 2H2OMon. 2/m7.JA.Sulfatoredmondite[Pb8O2Zn(OH)6](SO4)4 · 6H2OMon. 2/m :B2/m7.JA.Cubothioplumbite[Pb4(OH)4]Pb(S2O3)3Iso.m3(2/m3) :Pa37.JA.Hexathioplumbite[Pb4OH4]Pb(S2O3)3Hex. 6 :P637.JA.05SidpietersitePb2+4(S2O3)O2(OH)2Tric.1 :P17.JA.10SteverustitePb2+5(OH)5[Cu+(S6+O3S2-)3](H2O)2Mon. 2/m :P21/m7.JA.15FassinaitePb2(S2O3)(CO3)Orth.mmm(2/m2/m2/m) :Pnma7.JA.20NorthstaritePb6(Te4+O3)5(S6+O3S2-)Hex. 6 :P63

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    • References for DinilawiiteⓘRedmond Mine (TL)Bosi et al. (2023)
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