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Hydroxylhedyphane

A valid IMA mineral species
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About HydroxylhedyphaneHide

Formula:
Ca2Pb3(AsO4)3(OH)
Colour:
Colorless
Crystal System:
Trigonal
Name:
The name was introduced by Pasero et al. (2010) for a theoretically, potentially new mineral species, the hydroxyl analogue of hedyphane.
An arsenate apatite supergroup mineral belonging to the hedyphane group. It was approved as a new minerals species by IMA in 2018 (IMA2018-52), and described as a new species by Biagioni et al. (2019).

A fibrous material found at LĂ„ngban, Sweden and called by the local miners as "asbest-hedyphan" was examined by Sjögren (1891). This was probably the first mention of this mineral in the literature. Sjögren concluded that the material consisted of ïŹne-scale intergrowths between a “hydrous magnesium-silicate” and a “lead-arsenate" (cited after Biagioni et al. 2019).

Later Dunn et al. (1985) described a hedyphane sample from LÄngban, Sweden which contained 0.34 wt % H2O.

See also http://rruff.info/Hedyphane (RRUFF ID: R070425) and the entry Asbestos hedyphane.


Unique IdentifiersHide

Mindat ID:
47415
Long-form identifier:
mindat:1:1:47415:9

IMA Classification of HydroxylhedyphaneHide

Classification of HydroxylhedyphaneHide

8.BN.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
HhdyIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of HydroxylhedyphaneHide

Colour:
Colorless

Chemistry of HydroxylhedyphaneHide

Mindat Formula:
Ca2Pb3(AsO4)3(OH)
Element Weights:
Element% weight
Pb54.741 %
As19.794 %
O18.317 %
Ca7.059 %
H0.089 %

Calculated from ideal end-member formula.
Pb
As
O
Ca
H

Crystallography of HydroxylhedyphaneHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
P3
Cell Parameters:
a = 10.0414(3) Å, c = 7.2752(2) Å
Ratio:
a:c = 1 : 0.725
Unit Cell V:
635.28 ų
Z:
2
Morphology:
Prismatic crystals, up to 2.5 cm in length.

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits

Type Occurrence of HydroxylhedyphaneHide

General Appearance of Type Material:
Colourless prismatic crystals, up to 2.5 cm in length, forming an oriented intergrowth with a serpentine-subgroup mineral, fracture-fillings cutting braunite and hausmannite ore.
Place of Conservation of Type Material:
Mineralogical collections of (1) the Swedish Museum of Natural History, Box 50007, SE-10405 Stockholm, Sweden, catalogue number NRM #19070258, and (2) the Museo di Storia Naturale, UniversitĂ  di Pisa, Via Roma 79, Calci (PI), Italy, catalogue number 19903
Empirical Formula of Type Material:
M(1)(Ca1.56Pb0.41Mn0.01Na0.03)ÎŁ2.01 M(2)(Pb2.80Ba0.24Ca0.09)ÎŁ3.13 T (As2.64P0.16V0.01Si0.18)ÎŁ2.99O12 X[(OH)0.61Cl0.35F0.04]
Chemical Analysis of Type Material:
P2O50.96 %
V2O50.07 %
As2O525.36 %
SiO20.91 %
CaO7.74 %
MnO0.03 %
BaO2.95 %
PbO59.81 %
Na2O0.09 %
F0.06 %
Cl1.03 %
H2Ocalc0.46 %
O = -(F + Cl)-0.26 %
Total:99.21 %
Geological Setting of Type Material:
LĂ„ngban Fe–Mn–(Ba–As–Pb–Sb) deposit
Associated Minerals at Type Locality:

Synonyms of HydroxylhedyphaneHide

Other Language Names for HydroxylhedyphaneHide

Relationship of Hydroxylhedyphane to other SpeciesHide

Other Members of Hedyphane Group:
AiolositeNa4Bi(SO4)3ClHex. 6/m : P63/m
CaracoliteNa3Pb2(SO4)3ClMon. 2/m : P21/m
CesaniteNa3Ca2(SO4)3(OH)Hex. 6 : P6
FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
FluorsigaiiteCa2Sr3(PO4)3FHex. 6/m : P63/m
HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm(6/m2/m2/m) : P63/mmc
Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
MorelanditeCa2Ba3(AsO4)3ClHex.
ParafiniukiteCa2Mn3(PO4)3ClHex. 6/m : P63/m
PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
'UM2002-53-PO:CaHPb'Ca2Pb3(PO4)3(OH,Cl,F)

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Hydroxylhedyphane associated with CorkitePbFe3+3(PO4)(SO4)(OH)6
1 photo of Hydroxylhedyphane associated with 'Asbestos hedyphane'

Related Minerals - Strunz-mindat GroupingHide

8.BN.FluoralforsiteBa5(PO4)3FHex. 6/m : P6/m
8.BN.AraditeBaCa6[(SiO4)(VO4)](VO4)2FTrig. 3m : R3m
8.BN.MagganasiteCuFe3+3O(AsO4)3Tric. 1 : P1
8.BN.FluorpyromorphitePb5(PO4)3FHex. 6/m : P63/m
8.BN.FluorsigaiiteCa2Sr3(PO4)3FHex. 6/m : P63/m
8.BN.05PieczkaiteMn5(PO4)3ClHex. 6/m : P63/m
8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
8.BN.05VanadinitePb5(VO4)3ClHex. 6/m : P63/m
8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm(6/m2/m2/m) : P63/mmc
8.BN.05'Mimetite-M'Pb5(AsO4)3ClMon. 2/m : P21/c
8.BN.05JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m : P63/m
8.BN.05PliniusiteCa5(VO4)3FHex. 6/m : P63/m
8.BN.05'Hydroxylapatite-M'Ca5(PO4)3OHMon. 2/m : P21/c
8.BN.05HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm(6/m2/m2/m) : P63/mcm
8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
8.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
8.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3
8.BN.05AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
8.BN.05'Unnamed (OH-analogue of Mimetite)'Pb5(AsO4)3(OH)Hex. 6/m : P63/m
8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
8.BN.05ParafiniukiteCa2Mn3(PO4)3ClHex. 6/m : P63/m
8.BN.05MimetitePb5(AsO4)3ClHex. 6/m : P63/m
8.BN.05 va'Germanate-pyromorphite'Pb5(PO4)2GeO4
8.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
8.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
8.BN.05'Johnbaumite-M'Ca5(AsO4)3OHMon. 2/m : P21/m
8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
8.BN.05TurneaureiteCa5(AsO4)3ClHex. 6/m : P63/m
8.BN.05MorelanditeCa2Ba3(AsO4)3ClHex.
8.BN.05'Oxypyromorphite'Pb10(PO4)6O
8.BN.05Deloneite(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5Trig. 3 : P3
8.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
8.BN.05VanackeritePb4Cd(AsO4)3ClTrig. 3 : P3
8.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm(6/m2/m2/m) : P63/mmc
8.BN.10ArctiteNa2Ca4(PO4)3FTrig. 3m(32/m) : R3m
8.BN.10KrĂŒgeriteBaCa6(SiO4)2[(P0.5S0.5)O4]2FTrig. 3m(32/m) : R3m
8.BN.15GoryainoviteCa2(PO4)ClOrth. mmm(2/m2/m2/m) : Pbcm

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.

Internet Links for HydroxylhedyphaneHide

References for HydroxylhedyphaneHide

Localities for HydroxylhedyphaneHide

Showing 2 localities.

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.
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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.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Plaka
          • Plaka Mines
Uwe Kolitsch and Branko Rieck analyses (see also http://lavrion.gr/Minerals/Updates.html)
Sweden (TL)
 
  • VĂ€rmland County
    • Filipstad
      • LĂ„ngban Ore District
Dunn et al. (1985) +2 other references
 
and/or  
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