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Heliophyllite

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About HeliophylliteHide

Formula:
Pb6Cl4(As2O7)
Colour:
Yellow to greenish yellow
Lustre:
Vitreous, Greasy
Hardness:
2
Specific Gravity:
6.89 - 7.14
Crystal System:
Orthorhombic
Name:
From the Greek ήλιος for "sun" and φύλλον for "leaf", in allusion to the colour and the foliated habit.
Dimorph of:
Apparently dimorphous with Ecdemite.
Reinvestigation needed.


Classification of HeliophylliteHide

Approved, 'Grandfathered' (first described prior to 1959), Questionable
First Published:
1888
3/D.10-110
3.DC.65

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
46.2.2.1

46 : ANTIMONITES AND ARSENITES CONTAINING HYDROXYL OR HALOGEN
2 : Miscellaneous
23.8

23 : Arsenites

Physical Properties of HeliophylliteHide

Vitreous, Greasy
Transparency:
Translucent
Comment:
Lustre vitreous on cleavages, greasy on fracture surfaces.
Colour:
Yellow to greenish yellow
Streak:
Light yellow
Hardness:
Hardness:
VHN100=96 - Vickers
Cleavage:
Very Good
On {011}, nearly perfect.
Density:
6.89 - 7.14 g/cm3 (Measured)    7.33 g/cm3 (Calculated)

Optical Data of HeliophylliteHide

Type:
Biaxial (-)
Dispersion:
r > v strong

Chemical Properties of HeliophylliteHide

Formula:
Pb6Cl4(As2O7)
IMA Formula:
Pb6As2O7Cl4

Crystallography of HeliophylliteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 10.823 Å, b = 10.783 Å, c = 25.58 Å
Ratio:
a:b:c = 1.004 : 1 : 2.372
Unit Cell V:
2,985.30 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Crystals acutely pyramidal with (001) ^ (111) ~53° (Pajsberg) and the inclined faces strongly striated horizontally; also tabular {001} with {011}, {101}, and (001) ^ (011) 65°36' and (011) ^ (011) 78°48' (Långban), radiating. Coarse foliated or granular aggregates (intergrown with ecdemite); ball-like, massive.
Comment:
Pseudotetragonal

Geological EnvironmentHide

Geological Setting:
Oxidized zone of a Pb-Zn deposit; slags.

Type Occurrence of HeliophylliteHide

Geological Setting of Type Material:
Metamorphosed Fe-Mn ore body
Associated Minerals at Type Locality:
Reference:
Flink G (1888) Heliophyllit von Pajsberg. Öfversigt af Kongliga Vetenskaps-Akademiens Förhandlingar 45: 574-578

Other Language Names for HeliophylliteHide

Simplified Chinese:日叶石

Common AssociatesHide

CalciteCaCO3
CerussitePbCO3
MimetitePb5(AsO4)3Cl
Associated Minerals Based on Photo Data:
2 photos of Heliophyllite associated with AnglesitePbSO4
1 photo of Heliophyllite associated with BustamiteCaMn2+(Si2O6)
1 photo of Heliophyllite associated with BaryteBaSO4
1 photo of Heliophyllite associated with RhodoniteMn2+SiO3
1 photo of Heliophyllite associated with Goethiteα-Fe3+O(OH)

Related Minerals - Nickel-Strunz GroupingHide

3.DC.05LaurionitePbCl(OH)Orth. mmm (2/m 2/m 2/m)
3.DC.05ParalaurionitePbCl(OH)Mon. 2/m : B2/m
3.DC.10FiedleritePb3FCl4(OH) · H2OMon. 2/m
3.DC.15PenfielditePb2Cl3(OH)Hex. 6 : P6
3.DC.20LaurelitePb7F12Cl2Hex. 6 : P6
3.DC.25BismocliteBiOClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25Daubréeite(BiO)(OH,Cl)Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25MatlockitePbFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.25RorisiteCaFClTet.
3.DC.25Zavaritskite(BiO)FTet.
3.DC.25ZhangpeishaniteBaFClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
3.DC.30NadoritePbSbClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.30PeritePbBiClO2Orth. mmm (2/m 2/m 2/m) : Cmcm
3.DC.35AravaipaitePb3AlF9 · H2OTric.
3.DC.37CalcioaravaipaitePbCa2AlF9Tric. 1
3.DC.40ThorikositePb3Cl2(OH)(SbO3,AsO3)Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.DC.45MereheaditePb47Cl25(OH)13O24(CO3)(BO3)2Mon. m
3.DC.50BlixitePb8O5(OH)2Cl4Orth.
3.DC.55PinalitePb3WO5Cl2Orth.
3.DC.60SymesitePb10(SO4)O7Cl4 · H2OTric. 1 : P1
3.DC.65EcdemitePb6Cl4(As2O7)Mon. 2 : P21
3.DC.70MendipitePb3Cl2O2Orth. 2 2 2 : P21 21 21
3.DC.75DamaraitePb3Cl(OH)O2Orth. mm2 : Pmc21
3.DC.80OnoratoiteSb8Cl2O11Tric. 1 : P1
3.DC.85CotunnitePbCl2Orth. mmm (2/m 2/m 2/m)
3.DC.90PseudocotunniteK2PbCl4Orth.
3.DC.95BarstowitePb4Cl6(CO3) · H2OMon. 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

23.2NanlingiteNa(Ca5Li)Mg12(AsO3)2[Fe(AsO3)6]F14Trig.
23.3LeiteiteZn(As2O4)Mon. 2/m : P21/b
23.5Kuznetsovite(Hg+2)Hg2+(AsO4)ClIso. 2 3 : P21 3
23.6PaulmooreitePb2[As2O5]Mon. 2/m : P21/b
23.7EcdemitePb6Cl4(As2O7)Mon. 2 : P21
23.9FinnemanitePb5(AsO3)3ClHex. 6/m : P63/m
23.10GebharditePb8(As2O5)2OCl6Mon. 2/m : P21/b
23.11Zimbabweite(Na,K)2PbAs4(Ta,Nb,Ti)4O18Orth.
23.13RouseitePb2Mn2+[AsO3]2 · 2H2OTric.
23.14FreediteCu+Pb8(AsO3)2O3Cl5Mon. 2/m : B2/m
23.15ManganarsiteMn3(As2O4)(OH)4Trig.
23.17ArmangiteMn2+26(AsO3)14(HAsO3)4(CO3)Trig. 3 : P3
23.18KaribibiteFe3+3(As3+O2)4(As3+2O5)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
23.19SchneiderhöhniteFe2+Fe3+3As3+5O13Tric. 1 : P1
23.20Lazarenkoite(Ca,Fe2+)Fe3+As3+3O7 · 3H2OOrth.
23.21StenhuggariteCaFeSb(AsO3)2OTet.
23.22Tomichite(V,Fe)4Ti3AsO13(OH)Mon.

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 HeliophylliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Flink, G. (1888) Heliophyllit von Pajsberg. Öfversigt af Kongliga Vetenskaps-Akademiens Förhandlingar. 45: 574-578
Hamberg, A. (1889) Optische anomalien des ekdemit (heliophyllit) von Harstigen. Geologiska Föreningens i Stockholm Förhandlingar 11, 229-237.
Sillén and Melander (1941) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 103: 420.
Strunz (1942) Naturwissenschaften: 30: 89.
Periodico di Mineralogia (1970): 39: 323-341.
Li, W. and G. Chen (1985) The discovery of heliophyllite in China. Acta Mineralogica Sinica, 5(3), 216–220 (in Chinese with English abs.). (3) (1987) Mineral. Abs., 38, 347.

Internet Links for HeliophylliteHide

Localities for HeliophylliteHide

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 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.
China
 
  • Qinghai
    • Haixi Mongol and Tibetan Autonomous Prefecture
      • Da Qaidam (Dachaidan Co.)
        • Xitieshan
Li, W., and Chen, G. (1985): The discovery of heliophyllite in China. Acta Mineralogica Sinica 5(3), 216–220
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
Schnorrer-Köhler, G., Standfuss, K. & Standfuss, L. (1981): Neufunde von Mineralen aus den antiken Bleischlacken Laurions. Der Aufschluss, 32, 165-169.
          • Panormos area
https://www.mineralienatlas.de/lexikon/index.php/Griechenland/Attika%20%28Attik%ED%2C%20Attica%29/Lavrion%20%28Laurion%29%2C%20Bergbaudistrikt/Schlackenfundstellen/Panormos
          • Sounion area
Laurion The minerals in the ancient slags by Piet Gelaude etc.
          • Thorikos area
Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
          • Vrissaki area
Gelaude, Piet, van Kalmthout, Piet, and Rewitzer, Christian (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
Italy
 
  • Tuscany
    • Livorno Province
      • Campigliese (Campiglia Mountains; Campiglia Ridge)
        • Campiglia Marittima
          • Madonna di Fucinaia (Madonna della Fucinaia) slag heaps
http://www.comune.pisa.it/apsn/Articoli/Scorie/Capattoli.htm
      • Piombino
Muenchener Micromounter-Lithothek
Sweden
 
  • Värmland County
    • Filipstad
Öfvers. KVA handl.(1888) 45, 574; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1037; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
      • Nordmark District
        • Jakobsberg ore field
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1037.
      • Persberg ore district
        • Pajsberg
Flink, G. (1888) Heliophyllit von Pajsberg. Öfversigt af Kongliga Vetenskaps-Akademiens Förhandlingar 45: 574-578 ; Nysten, P. (1984): Kleinod des Nordens - Harstigen in Schweden. Magma 2/1984, 12-30.
USA
 
  • Nevada
    • Clark Co.
      • Spring Mountains
        • Goodsprings Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
 
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