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Parascorodite

A valid IMA mineral species
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02517030017271928833152.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
04961540017271928867049.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
02943940017671064756647.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
02517030017271928833152.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
04961540017271928867049.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
09205620017547569453350.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
02517030017271928833152.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
04961540017271928867049.jpg
Parascorodite

Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
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About ParascoroditeHide

Formula:
FeAsO4 · 2H2O
Colour:
White
Lustre:
Vitreous
Hardness:
1 - 2
Specific Gravity:
3.358 (Calculated)
Crystal System:
Hexagonal
Name:
From the Greek "para," for "near," and Scorodite, with which it has a dimorphic relationship.
Dimorph of:
Scorodite
The trigonal dimorph of Scorodite. Compare 'UM1979-03-AsO:Fe' and 'UM1979-04-AsO:Fe'.


Unique IdentifiersHide

Mindat ID:
7216
Long-form identifier:
mindat:1:1:7216:4

IMA Classification of ParascoroditeHide

IMA status:
Approved
IMA Formula:
Fe3+As5+O4(H2O)2
Approval year:
1996
First published:
1999

Classification of ParascoroditeHide

Strunz-mindat (2026):
8.CD.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
D : With only medium-sized cations, RO4:H2O = 1:2

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

Physical Properties of ParascoroditeHide

Lustre:
Vitreous
Colour:
White
Streak:
Yellowish white
Hardness:
1 - 2 on Mohs scale
Density:
3.358 g/cm3 (Calculated)

Optical Data of ParascoroditeHide

Type:
Uniaxial (+/-)
RI values:
nα = 1.72 nβ = 1.72
Surface Relief:
Moderate

Chemistry of ParascoroditeHide

Mindat Formula:
FeAsO4 · 2H2O
Element Weights:
Element% weight
O41.594 %
As32.462 %
Fe24.197 %
H1.747 %

Calculated from ideal end-member formula.
Elements listed:
As, Fe, H, O - search for minerals with similar chemistry

Crystallography of ParascoroditeHide

Crystal System:
Hexagonal
Class (H-M):
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mcm
Setting:
P63/mcm
Cell Parameters:
a = 8.9232 Å, c = 9.296 Å
Ratio:
a:c = 1 : 1.042
Unit Cell V:
687.71 ÅÂģ
Z:
6
Morphology:
Tabular to prismatic hexagonal, tiny (to 1 Ξm) crystals; may be fan-shaped, in crudely hemispherical aggregates.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0007087ParascoroditePerchiazzi N, Ondrus P, Skala R (2004) Ab initio X-ray powder structure determination of parascorodite, Fe(H2O)2AsO4 European Journal of Mineralogy 16 1003-100720040293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.973 Å(61)
4.184 Å(44)
4.076 Å(100)
3.053 Å(67)
2.806 Å(68)
2.661 Å(59)
2.520 Å(54)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Stage 10b: Anthropogenic minerals<10 Ka
55 : Anthropogenic mine minerals

Type Occurrence of ParascoroditeHide

Type Locality:
ⓘ Kaňk, KutnÃĄ Hora, KutnÃĄ Hora District, Central Bohemian Region, Czech Republic
General Appearance of Type Material:
Earthy white to white-yellow aggregates.
Place of Conservation of Type Material:
National Museum, Prague, Czech Republic, number P1p 25/98.
Geological Setting of Type Material:
From heavily weathered dumps of polymetallic ore rich in arsenic but thought to have formed in the deposit pre-mining due to natural weathering in the supergene zone.
Associated Minerals at Type Locality:
ScoroditePitticiteBukovskÃ―iteKaňkiteZÃ―kaite
GypsumJarosite

Synonyms of ParascoroditeHide

Other Language Names for ParascoroditeHide

Related Minerals - Strunz-mindat GroupingHide

8.CD.CastellaroiteMn2+3(AsO4)2 · 4H2OMon. 2/m
8.CD.SergeysmirnoviteMgZn2(PO4)2 · 4H2OOrth. mmm(2/m2/m2/m) : Pnma
8.CD.05PhosphosideriteFePO4 · 2H2OMon. 2/m
8.CD.05MetavarisciteAlPO4 · 2H2OMon. 2/m : P21/b
8.CD.05BonacinaiteSc(AsO4) · 2H2OMon. 2/m
8.CD.05KolbeckiteScPO4 · 2H2OMon. 2/m
8.CD.10YanomamiteInAsO4 · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CD.10MansfielditeAlAsO4 · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CD.10ScoroditeFe3+AsO4 · 2H2OOrth. mmm(2/m2/m2/m)
8.CD.10VarisciteAlPO4 · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CD.10StrengiteFePO4 · 2H2OOrth. mmm(2/m2/m2/m) : Pbca
8.CD.20LudlamiteFe2+3(PO4)2 · 4H2OMon. 2/m : P21/b
8.CD.25SterlinghilliteMn2+3(AsO4)2 · 3H2OMon.
8.CD.30RollanditeCu3(AsO4)2 · 4H2OOrth. mmm(2/m2/m2/m) : Pnma
8.CD.35LiversidgeiteZn6(PO4)4 · 7H2OTric. 1 : P1
8.CD.40ThorasphiteTh2H(PO4,AsO4)3 · 6H2OOrth. mmm(2/m2/m2/m) : Pbcn

Other InformationHide

Notes:
Dissolves slowly in 10% HCl, but no reaction with water

Under hydrothermal conditions (distilled water, sealed quartz glass container, temperature of 155 °C) lasting for a period of two months, parascorodite re-crystallizes to scorodite.
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 ParascoroditeHide

References for ParascoroditeHide

Localities for ParascoroditeHide

Showing 6 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.
Czech Republic (TL)
 
  • Central Bohemian Region
    • KutnÃĄ Hora District
      • KutnÃĄ Hora
AmMin 84:1439-1444 +1 other reference
  • Karlovy Vary Region
    • Karlovy Vary District
      • JÃĄchymov
HlouÅĄek et al. (2002)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Agios Konstantinos (Kamariza)
          • Kamariza Mines (Kamareza Mines)
Rieck et al. (2018)
no description given yet] +1 other reference
Romania
 
  • Maramureș County
    • Băiuț
      • Poiana Botizii
Januszewska et al. (9th Meeting of the Mineralogical Society of Poland 28th Meeting of the Petrology group of the Mineralogical Society of Poland, October 19-22, 2023, Bielawa, Poland)
Serbia
 
  • Central Serbia
    • RaÅĄka District
      • RaÅĄka
Jelić et al. (2024)
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