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Ferrostrunzite

A valid IMA mineral species
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04409580014969717657460.jpg
Ferrostrunzite, etc.

Raccoon Creek, Mullica Hill, Harrison Township, Gloucester County, New Jersey, USA
06756040015738348817076.jpg
Ferrostrunzite

Clear Spring Mine, Homeland, Central Florida Phosphate Mining District, Polk County, Florida, USA
01588450014951186055511.jpg
Ferrostrunzite, etc.

Dry Weather Road Locality, Glenhope, Tasman Region, New Zealand
05482750014951186775567.jpg
Ferrostrunzite, etc.

Raccoon Creek, Mullica Hill, Harrison Township, Gloucester County, New Jersey, USA
06970940015152752893922.jpg
Ferrostrunzite

Clear Spring Mine, Homeland, Central Florida Phosphate Mining District, Polk County, Florida, USA
06839820015119427816901.jpg
Ferrostrunzite, etc.

Dry Weather Road Locality, Glenhope, Tasman Region, New Zealand
06040370014951228682531.jpg
Ferrostrunzite, etc.

Raccoon Creek, Mullica Hill, Harrison Township, Gloucester County, New Jersey, USA
04915900015166812202138.jpg
Ferrostrunzite

Clear Spring Mine, Homeland, Central Florida Phosphate Mining District, Polk County, Florida, USA
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About FerrostrunziteHide

Formula:
Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Colour:
Creamy yellow, pale yellow, tan to light brown
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy, Silky
Hardness:
4
Specific Gravity:
2.50
Crystal System:
Triclinic
Member of:
Strunzite Group
Name:
Named in 1983 by Donald R. Peacor, Pete J. Dunn, and William B. Simmons for its chemical relationship to strunzite.
Dimorph of:
Metavivianite
Compare also the related iron(II,III) phosphates ferrolaueite and stewartite and the related iron arsenates symplesite and ferrisymplesite.

Not to be confused with ferristrunzite.


Unique IdentifiersHide

Mindat ID:
1529
Long-form identifier:
mindat:1:1:1529:1
GUID
(UUID V4):
3bbfade5-0072-4eea-9b06-ac4a9001a9ae

IMA Classification of FerrostrunziteHide

Classification of FerrostrunziteHide

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.:
42.11.9.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
Hey's CIM Ref.:
19.13.9

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

Physical Properties of FerrostrunziteHide

Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy, Silky
Transparency:
Transparent, Translucent
Colour:
Creamy yellow, pale yellow, tan to light brown
Streak:
White.
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Three cleavages. One parallel to crystal elongation, one nearly perpendicular to optic normal, one perpendicular to the acute bisectrix Bxa.
Fracture:
Splintery
Density:
2.50 g/cm3 (Measured)    2.57 g/cm3 (Calculated)

Optical Data of FerrostrunziteHide

Type:
Biaxial (-)
RI values:
nα = 1.628 nβ = 1.682 nγ = 1.723
2V:
Measured: 80° , Calculated: 78°
Birefringence:
0.095
Max Birefringence:
δ = 0.095
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
weak to distinct, asymmetric
Optical Extinction:
Z^c ~ 3°-8°
Pleochroism:
Weak
Comments:
X = yellow green, Z = orange

Chemistry of FerrostrunziteHide

Mindat Formula:
Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Elements listed:
Fe, H, O, P - search for minerals with similar chemistry

Crystallography of FerrostrunziteHide

Crystal System:
Triclinic
Cell Parameters:
a = 10.23 Å, b = 9.77 Å, c = 7.37 Å
α = 89.65°, β = 98.28°, γ = 117.26°
Ratio:
a:b:c = 1.047 : 1 : 0.754
Unit Cell V:
646.47 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
8.94 Å(80)
5.29 Å(100)
4.47 Å(30)
4.33 Å(20)
3.452 Å(30)
3.277 Å(40)
3.213 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
Geological Setting:
Granite pegmatites; iron ore deposits

Type Occurrence of FerrostrunziteHide

Type Locality:
ⓘ Raccoon Creek, Mullica Hill, Harrison Township, Gloucester County, New Jersey, USA
General Appearance of Type Material:
Flattened prisms to 0.5 mm
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 149594.
Geological Setting of Type Material:
Phosphate replacements of marine shells in sedimentary marl.
Associated Minerals at Type Locality:
RockbridgeitePhosphosideriteBeraunite
Reference:
Peacor, D.R., Dunn, P.J., Simmons, W.B. (1983) Ferrostrunzite, the ferrous iron analogue of strunzite from Mullica Hill, New Jersey. Neues Jahrbuch für Mineralogie, Monatshefte: 1983: 524-528.

Synonyms of FerrostrunziteHide

Other Language Names for FerrostrunziteHide

Relationship of Ferrostrunzite to other SpeciesHide

Member of:
Strunzite Group
Other Members of this group:
FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
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:
4 photos of Ferrostrunzite associated with RockbridgeiteFe2+Fe3+4(PO4)3(OH)5
2 photos of Ferrostrunzite associated with VivianiteFe2+Fe2+2(PO4)2 · 8H2O
2 photos of Ferrostrunzite associated with StrengiteFePO4 · 2H2O
1 photo of Ferrostrunzite associated with BerauniteFe3+6(PO4)4O(OH)4 · 6H2O
1 photo of Ferrostrunzite associated with FerroberauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2O
1 photo of Ferrostrunzite associated with PhosphosideriteFePO4 · 2H2O
1 photo of Ferrostrunzite associated with Limonite
1 photo of Ferrostrunzite associated with WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2O

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.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
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 FerrostrunziteHide

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 FerrostrunziteHide

References for FerrostrunziteHide

Localities for FerrostrunziteHide

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
 
  • Wallonia
    • Hainaut
      • Bernissart
        • Blaton
Schnorrer-Köhler (1988) +1 other reference
Europe
 
Berbain et al. (2012)
France
 
  • Occitanie
    • Pyrénées-Orientales
      • Céret
        • Collioure
Berbain et al. (2012)
Germany
 
  • Bavaria
    • Upper Palatinate
      • Cham District
        • Waldmünchen
          • Althütte
Fehr et al. (1985)
      • Neustadt an der Waldnaab District
        • Waidhaus
Wittern (2001) +1 other reference
  • North Rhine-Westphalia
van Tassel (1992)
      • Hochsauerlandkreis
        • Arnsberg
          • Uentrop
- (n.d.)
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
            • Helmke quarry nature reserve
www.mg-mineralien-fossilien.info (n.d.)
Italy
 
  • Apulia
    • Taranto Province
  • Lombardy
    • Lecco Province
      • Dorio
Vignola et al. (2011) +1 other reference
New Zealand
 
  • Tasman Region
    • Glenhope
Ralph Merrill - Minerals Unlimited
Poland
 
  • Lower Silesian Voivodeship
    • Świdnica County
      • Gmina Świdnica
Włodek et al. (2015)
        • Michałkowa pegmatites
Pieczka et al. (2017)
Sweden
 
  • Norrbotten County
    • Kiruna
      • Svappavaara
Jansson (2000) +1 other reference
UK
 
  • England
    • Cornwall
      • Perranzabuloe
        • Perran Iron Lode (Great Perran Iron Lode)
Weiß (1989) +1 other reference
USA
 
  • Florida
    • Hardee County
      • South Florida Phosphate Mining District
Marc V. Hurst (2012)
    • Polk County
      • Central Florida Phosphate Mining District (Bone Valley)
        • Homeland
Marc V. Hurst (2012)
        • Noralyn/Phosphoria Mines (IMC-Agrico)
Marc V. Hurst (2012)
  • Indiana
    • Pike County
Coveney et al. (1984)
  • Maine
    • Oxford County
      • Newry
King et al. (1994) +1 other reference
  • New Hampshire
    • Grafton County
      • Groton
Whitmore et al. (2004)
  • New Jersey
    • Gloucester County
      • Harrison Township
        • Mullica Hill
Neues Jahrb.Min. (1983)
    • Monmouth County
      • Upper Freehold Township
        • Arneytown
C.G.Segeler (personal communication)
RRUFF ID: R100079
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