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Minehillite

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About MinehilliteHide

Formula:
(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16
Colour:
Colourless, white
Lustre:
Pearly
Hardness:
4
Crystal System:
Hexagonal
Member of:
Name:
Named in 1984 by Pete J. Dunn, Donald R. Peacor, Peter B. Leavens, and Fred J. Wicks for the location, Mine Hill, where most of the zinc and iron mines in Franklin, New Jersey, USA are located.
Crystal structure related to that of gyrolite.


Classification of MinehilliteHide

Approved
9.EE.75

9 : SILICATES (Germanates)
E : Phyllosilicates
E : Single tetrahedral nets of 6-membered rings connected by octahedral nets or octahedral bands
73.2.2b.1

73 : PHYLLOSILICATES Condensed Tetrahedral Sheets
2 : Condensed Tetrahedral Sheets with double and single layers
16.12.18

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn

Physical Properties of MinehilliteHide

Pearly
Colour:
Colourless, white
Hardness:

Optical Data of MinehilliteHide

Type:
Uniaxial (-)
RI values:
nω = 1.607 nε = 1.604
Max Birefringence:
δ = 0.003
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of MinehilliteHide

Formula:
(K,Na)2-3Ca28Zn4Al4Si40O112(OH)16
IMA Formula:
(K,Na)2Ca28Zn5Al4Si40O112(OH)16
Common Impurities:
Fe,Mn,Mg,H2O

Crystallography of MinehilliteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 9.77 Å, c = 33.29 Å
Ratio:
a:c = 1 : 3.407
Unit Cell V:
2,751.91 ų (Calculated from Unit Cell)

Type Occurrence of MinehilliteHide

Synonyms of MinehilliteHide

Other Language Names for MinehilliteHide

Relationship of Minehillite to other SpeciesHide

Member of:
Other Members of this group:
Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Wollastonite9 photos of Minehillite associated with Wollastonite on mindat.org.
Grossular7 photos of Minehillite associated with Grossular on mindat.org.
Margarosanite6 photos of Minehillite associated with Margarosanite on mindat.org.
Lead6 photos of Minehillite associated with Lead on mindat.org.
Microcline4 photos of Minehillite associated with Microcline on mindat.org.
Calcite4 photos of Minehillite associated with Calcite on mindat.org.
Clinopyroxene Subgroup4 photos of Minehillite associated with Clinopyroxene Subgroup on mindat.org.
Clinohedrite1 photo of Minehillite associated with Clinohedrite on mindat.org.
Willemite1 photo of Minehillite associated with Willemite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.EE.05BementiteMn7Si6O15(OH)8Mon.
9.EE.10BrokenhilliteMn8Si6O15(OH)10Hex. 6mm : P63mc
9.EE.10Pyrosmalite-(Fe)Fe2+8Si6O15(OH,Cl)10Trig. 3m (3 2/m) : P3m1
9.EE.10FriedeliteMn2+8Si6O15(OH,Cl)10Mon. 2/m : B2/m
9.EE.10Pyrosmalite-(Mn)Mn2+8Si6O15(OH,Cl)10Trig.
9.EE.10Mcgillite(Mn,Fe)8Si6O15(OH)8Cl2Mon. 2/m : B2/m
9.EE.15Nelenite(Mn,Fe)16(Si12O30)(OH)14[As3+3O6(OH)3]Mon.
9.EE.15SchalleriteMn2+16As3Si12O36(OH)17Trig. 3m : P3m1
9.EE.20Palygorskite(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2OMon. 2/m : B2/m
9.EE.20TuperssuatsiaiteNa2Fe3Si8O20(OH)2 · 4H2OMon. 2/m : B2/m
9.EE.20YofortieriteMn5Si8O20(OH)2 · 8-9H2OMon. 2/m : B2/m
9.EE.20WindhoekiteCa2Fe3+2.67[Si8O20](OH)4 · 10H2O Mon. 2/m : B2/m
9.EE.25Falcondoite(Ni,Mg)4Si6O15(OH)2 · 6H2OOrth.
9.EE.25LoughliniteNa2Mg3Si6O16 · 8H2OOrth.
9.EE.25SepioliteMg4(Si6O15)(OH)2 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
9.EE.25Kalifersite(K,Na)5Fe3+7Si20O50(OH)6 · 12H2OTric.
9.EE.30GyroliteNaCa16Si23AlO60(OH)8 · 14H2OTric.
9.EE.30OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
9.EE.30TungusiteCa4Fe2Si6O15(OH)6
9.EE.35Reyerite(Na,K)2Ca14(Si,Al)24O58(OH)8 · 6H2OTrig.
9.EE.35Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
9.EE.40NatrosiliteNa2Si2O5Mon.
9.EE.45MakatiteNa2Si4O8(OH)2 · 4H2OMon. 2/m : P21/b
9.EE.50VarennesiteNa8Mn2Si10O25(OH,Cl)2 · 12H2OOrth.
9.EE.55RaiteNa4Mn2+3Ti0.25Si8O20(OH)2 · 10H2OOrth. 2 2 2 : C2 2 2
9.EE.60IntersiliteNa6Mn2+Ti[Si10O24(OH)](OH)3 · 4H2OMon.
9.EE.65Shafranovskite(Na,K)6(Mn,Fe)3Si9O24 · 6H2OTrig.
9.EE.65ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig.
9.EE.70ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
9.EE.80Fedorite(Na,K)2-3(Ca4Na3)Si16O38(OH,F)2 · 3.5H2OTric. 1 : P1
9.EE.80Martinite(Na,◻,Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2·4H2OTric. 1 : P1
9.EE.85Lalondeite(Na,Ca)6(Ca,Na)3Si16O38(F,OH)2·3H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

73.2.2b.2OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.12.1StronalsiteNa2SrAl4Si4O16Orth.
16.12.2SlawsoniteSr(Al2Si2O8)Mon.
16.12.3BrewsteriteMon.
16.12.4CelsianBa(Al2Si2O8)Mon. 2/m
16.12.5ParacelsianBa(Al2Si2O8)Mon.
16.12.6CymriteBaAl2Si2(O,OH)8 · H2OMon.
16.12.7EdingtoniteBa[Al2Si3O10] · 4H2O
16.12.8BanalsiteNa2BaAl4Si4O16Orth.
16.12.9Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2OMon. 2/m : P21/m
16.12.10Hyalophane(K,Ba)[Al(Si,Al)Si2O8]Mon.
16.12.11BalipholiteBaLiMg2Al3(Si2O6)2(OH)4Orth.
16.12.12ArmeniteBaCa2Al6Si9O30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnna
16.12.13Wellsite(K,Ba,Ca,K2)Al2Si6O16 · 6H2OMon. 2/m : P21/m
16.12.14Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2OOrth.
16.12.15Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2Mon. 2/m : B2/b
16.12.16Fraipontite(Zn,Al)3((Si,Al)2O5)(OH)4Mon.
16.12.17SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
16.12.19HendricksiteK(Zn,Mg,Mn2+)3(AlSi3O10)(OH)2Mon. 2/m : B2/m
16.12.20Baileychlore(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8Tric.

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.

References for MinehilliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1984): 69: 1150-1155.
Dai, Y., Post, J. E. & Appleman, D. E. (1995): Crystal structure of minehillite: twinning and structural relationships to reyerite. American Mineralogist 80, 173-178.

Internet Links for MinehilliteHide

Localities for MinehilliteHide

ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • New Jersey
    • Sussex Co.
      • Franklin mining district
        • Franklin
Dunn, P.J., et al: (1984); Dunn(1995):Pt4:501-502.
Mineral and/or Locality  
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