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Ferristrunzite

A valid IMA mineral species
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04153990015445342095085.jpg
Ferristrunzite, etc.

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
09464850014951044748023.jpg
Ferristrunzite

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
04321040015006430217135.jpg
Ferristrunzite, etc.

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
04153990015445342095085.jpg
Ferristrunzite, etc.

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
08056550014947235218027.jpg
Ferristrunzite

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
01582740015004670084231.jpg
Ferristrunzite, etc.

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
04153990015445342095085.jpg
Ferristrunzite, etc.

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
09464850014951044748023.jpg
Ferristrunzite

Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
Hide all sections | Show all sections

About FerristrunziteHide

Formula:
Fe3+Fe3+2(PO4)2(OH)3 · 5H2O
Colour:
Pale yellow to creamy white, tan to very light brown
Lustre:
Sub-Vitreous, Resinous, Waxy, Silky, Dull
Hardness:
4
Specific Gravity:
2.38 - 2.50
Crystal System:
Triclinic
Member of:
Strunzite Group
Name:
Named in 1987 by Donald R. Peacor, Pete J. Dunn, William B. Simmons, and Robert A. Ramik for its chemical relationship to strunzite.

Not to be confused with ferrostrunzite.
Polymorph of:
Laueite, Stewartite
Isostructural with:
Strunzite
This page provides mineralogical data about Ferristrunzite.


Unique IdentifiersHide

Mindat ID:
1500
Long-form identifier:
mindat:1:1:1500:0
GUID
(UUID V4):
42840caa-36d3-42a2-91f7-4877b920a4cc

IMA Classification of FerristrunziteHide

Classification of FerristrunziteHide

Strunz-mindat (2024):
8.DC.25

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
Dana 8th ed.:
42.11.9.3

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
Hey's CIM Ref.:
19.13.8

19 : Phosphates
13 : Phosphates of Fe alone

Mineral SymbolsHide

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

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

Pronunciation of FerristrunziteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of FerristrunziteHide

Lustre:
Sub-Vitreous, Resinous, Waxy, Silky, Dull
Transparency:
Transparent, Translucent
Colour:
Pale yellow to creamy white, tan to very light brown
Streak:
very pale yellow
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
One, probable, parallel X-Z
Fracture:
Splintery
Density:
2.38 - 2.50 g/cm3 (Measured)    2.55 g/cm3 (Calculated)

Optical Data of FerristrunziteHide

Type:
Biaxial (+)
RI values:
nα = 1.664 nβ = 1.698 nγ = 1.757
2V:
Measured: 77° , Calculated: 78°
Birefringence:
0.093
Max Birefringence:
δ = 0.093
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
strong
Optical Extinction:
Z^c ~ 17°
Pleochroism:
Visible
Comments:
X = greenish-yellow, Z = brownish yellow

Chemistry of FerristrunziteHide

Mindat Formula:
Fe3+Fe3+2(PO4)2(OH)3 · 5H2O
Elements listed:
Fe, H, O, P - search for minerals with similar chemistry

Chemical AnalysisHide

Crystallography of FerristrunziteHide

Crystal System:
Triclinic
Cell Parameters:
a = 10.012 Å, b = 9.732 Å, c = 7.334 Å
α = 90.50°, β = 96.99°, γ = 116.43°
Ratio:
a:b:c = 1.029 : 1 : 0.754
Unit Cell V:
633.56 ų (Calculated from Unit Cell)
Z:
2
Comment:
Point Group: 1 or 1; Space Group: P1 or P1.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.87 Å(80)
5.34 Å(100)
4.48 Å(20)
4.20 Å(30)
3.442 Å(30)
3.387 Å(30)
3.267 Å(40)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
Geological Setting:
Granite pegmatites, sedimentary phosphate nodules.

Type Occurrence of FerristrunziteHide

Type Locality:
ⓘ Mont-des-Groseillers, Blaton, Bernissart, Hainaut, Wallonia, Belgium
General Appearance of Type Material:
Tan radiating acicular crystals.
Place of Conservation of Type Material:
National Museum of Natural History (Smithsonian Institution), Washington, D.C., USA, catalogue number 162499.
Geological Setting of Type Material:
Fracture filling in a sedimentary rock.
Associated Minerals at Type Locality:
StrengiteCacoxeniteCacoxeniteBeraunite
Reference:
Peacor, D.R., Dunn, P.J., Simmons, W.B., Ramik, R.A. (1987) Ferristrunzite, a new member of the strunzite group, from Blaton, Belgium. Neues Jahrbuch für Mineralogie, Monatshefte 1987, Heft 10, 453-457.

Synonyms of FerristrunziteHide

Other Language Names for FerristrunziteHide

Relationship of Ferristrunzite to other SpeciesHide

Member of:
Strunzite Group
Other Members of this group:
FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
38 photos of Ferristrunzite associated with CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2O
33 photos of Ferristrunzite associated with StrengiteFePO4 · 2H2O
32 photos of Ferristrunzite associated with BerauniteFe3+6(PO4)4O(OH)4 · 6H2O
12 photos of Ferristrunzite associated with FerroberauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2O
12 photos of Ferristrunzite associated with RockbridgeiteFe2+Fe3+4(PO4)3(OH)5
10 photos of Ferristrunzite associated with WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2O
7 photos of Ferristrunzite associated with MitridatiteCa2Fe3+3(PO4)3O2 · 3H2O
5 photos of Ferristrunzite associated with PhosphosideriteFePO4 · 2H2O
1 photo of Ferristrunzite associated with FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2O

Related Minerals - Strunz-mindat GroupingHide

8.DC.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.CésarferreiraiteFe2+ Fe3+2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.FerrivauxiteFe3+Al2(PO4)2(OH)3 · 5H2OTric. 1 : P1
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2OMon. 2/m : B2/b
8.DC.27ZincoberauniteZnFe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.30Kayrobertsonite[MnAl2(PO4)2(OH)2(H2O)4] · 2H2OTric. 1 : P1
8.DC.30KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon. m : Bm
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b
8.DC.62KenngottiteMn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : P2/b
8.DC.67MolinelloiteCu(H2O)(OH)V4+O(V5+O4)Tric. 1 : P1
8.DC.70WhitecapsiteH16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2OHex. 6/m : P63/m
8.DC.75HeimitePbCu2(AsO4)(OH)3 · 2H2OMon. 2/m
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/b

Fluorescence of FerristrunziteHide

In UV light:
Not fluorescent in UV

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 FerristrunziteHide

References for FerristrunziteHide

Localities for FerristrunziteHide

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.
Belgium (TL)
 
  • Wallonia
    • Hainaut
      • Bernissart
        • Blaton
Van Tassel (1966) +8 other references
    • Namur
      • Anhée
Dillen et al. (1990) +2 other references
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
      • Barra do Cuieté
Baijot et al. (2014)
Czech Republic
 
  • Karlovy Vary Region
    • Cheb District
      • Aš
Breiter K.
France
 
  • Occitanie
    • Tarn
      • Castres
        • Fontrieu
          • Fumade
Favreau et al. (2013)
Germany
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
Wittern (2001) +1 other reference
  • North Rhine-Westphalia
    • Arnsberg
      • Hochsauerlandkreis
        • Arnsberg
- (n.d.)
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
            • Helmke quarry nature reserve
Blaß et al. (1994) +1 other reference
    • Düsseldorf
      • Wuppertal
        • Aprath castle
Emser Hefte 1988 (4)
  • Saxony
    • Görlitz District
      • Neißeaue
Witzke et al. (2013)
  • Thuringia
    • Nordhausen District
      • Harztor
        • Herrmannsacker
          • Lange Tal
            • Neustadt dam
Gröbner et al. (2011)
Poland
 
  • Lower Silesian Voivodeship
    • Wrocław County
      • Gmina Kobierzyce
Ł. Kruszewski PXRD & pXRF data (paper in preparation)
Portugal
 
  • Guarda
    • Gouveia
      • Folgosinho
Alves (2016)
USA
 
  • Wisconsin
    • Rusk County
      • Ladysmith-Rhinelander Metavolcanic Complex
        • Ladysmith
wgnhs.uwex.edu (n.d.)
Mars
 
  • Aeolis quadrangle
    • Gusev Crater
      • Columbia Hills
        • Husband Hill
          • Cumberland Ridge
Lane et al. (2008)
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