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Mattheddleite

A valid IMA mineral species
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02362680014955100602009.jpg
Mattheddleite, etc.

Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK
04622460015175175669914.jpg
Mattheddleite

Hopeful Vein, Wanlock Dod, Leadhills, South Lanarkshire, Scotland, UK
06231250014947594383938.jpg
Mattheddleite, etc.

Cove Vein, Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK
09927560017056393666516.jpg
Mattheddleite, etc.

Daren Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
01686860014946723725871.jpg
Mattheddleite, etc.

Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK
03455630015175175578963.jpg
Mattheddleite

Hopeful Vein, Wanlock Dod, Leadhills, South Lanarkshire, Scotland, UK
09520930014980868123604.jpg
Mattheddleite, etc.

Cove Vein, Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK
09927560017056393666516.jpg
Mattheddleite, etc.

Daren Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
06215050014947474358313.jpg
Mattheddleite, etc.

Whytes Cleuch, Wanlockhead, Dumfries and Galloway, Scotland, UK
08722840015529210521490.jpg
Mattheddleite

Hopeful Vein, Wanlock Dod, Leadhills, South Lanarkshire, Scotland, UK
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About MattheddleiteHide

08643210014947594437685.jpg
Matthew Forster Heddle
Formula:
Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Colour:
Creamy white to pinkish
Lustre:
Adamantine
Hardness:
3½ - 4½
Specific Gravity:
6.96 (Calculated)
Crystal System:
Hexagonal
Name:
Named after Matthew Forster Heddle (1828-1897), Scottish geologist and mineralogist who did significant work towards investigating and describing Scotland's mineralogy in the 19th century. First described from Leadhills, Strathclyde, Scotland, UK by Livingstone et al. (1987).
A mineral in the Ellestadite Group of the Apatite Supergroup.
An OH-dominant analogue may exist, named as "hydroxylmattheddleite" by Pasero et al. (2010).


Unique IdentifiersHide

Mindat ID:
2597
Long-form identifier:
mindat:1:1:2597:9
GUID
(UUID V4):
9d213b4d-e042-4746-aabd-9d9b1aa6fdc3

IMA Classification of MattheddleiteHide

Classification of MattheddleiteHide

Strunz-mindat (2024):
9.AH.25

9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
Dana 8th ed.:
52.4.9.6

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Hey's CIM Ref.:
17.10.23

17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate

Mineral SymbolsHide

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

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

Physical Properties of MattheddleiteHide

Lustre:
Adamantine
Transparency:
Transparent
Colour:
Creamy white to pinkish
Streak:
White
Hardness:
3½ - 4½ on Mohs scale
Cleavage:
Poor/Indistinct
on {0001}, or a parting
Density:
6.96 g/cm3 (Calculated)

Optical Data of MattheddleiteHide

Type:
Uniaxial (-)
RI values:
nω = 2.017 nε = 1.999
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemistry of MattheddleiteHide

Mindat Formula:
Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Elements listed:
Cl, H, O, Pb, S, Si - search for minerals with similar chemistry

Crystallography of MattheddleiteHide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 10.0056 Å, c = 7.496 Å
Ratio:
a:c = 1 : 0.749
Unit Cell V:
649.9 ų
Z:
2
Morphology:
Tiny (10-100 µm) acicular hexagonal prisms forming radiating rosettes.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014546MattheddleiteSteele I M, Pluth J J, Livingstone A (2000) Crystal structure of mattheddleite: a Pb, S, Si phase with the apatite structure Mineralogical Magazine 64 915-9212000Leadhills, Scotland0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.32 Å(40)
4.13 Å(40)
3.41 Å(20)
3.26 Å(30)
2.988 Å(100)
2.877 Å(40)
2.072 Å(20)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47b : [Sulfates and sulfites]
47g : [Halogen-bearing surface weathering minerals]
Stage 10b: Anthropogenic minerals<10 Ka
56 : Slag and smelter minerals (see also #51 and #55)
Geological Setting:
Oxidation zone in lead deposits.

Type Occurrence of MattheddleiteHide

Type Locality:
ⓘ Leadhills, South Lanarkshire, Scotland, UK
General Appearance of Type Material:
Creamy-white linings of quartz cavities consisting of radiating hexagonal prisms, up to 100 um by 10-20 µm, forming aggregates about 0.2 mm in diameter.
Place of Conservation of Type Material:
Royal Museum of Scotland, Edinburgh, Scotland and at the British Museum (NH), London, England.
Associated Minerals at Type Locality:
MacphersoniteLeadhilliteLeadhilliteLanarkiteHydrocerussite
CerussiteCaledonite
Reference:
Livingstone, A., Ryback, G., Fejer, E.E., and Stanley, C.J. (1987) Mattheddleite, a new mineral of the apatite group from Leadhills, Strathclyde region. Scottish Journal of Geology: 23: 1-8.
Download:
https://rruff.info/rruff_1.0/uploads/MM70_265.pdf

Synonyms of MattheddleiteHide

Other Language Names for MattheddleiteHide

Relationship of Mattheddleite to other SpeciesHide

Member of:
Ellestadite Group > Apatite Supergroup
Other Members of this group:
ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex. 6/m : P63/m
HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm

Common AssociatesHide

Associated Minerals Based on Photo Data:
38 photos of Mattheddleite associated with CaledonitePb5Cu2(SO4)3(CO3)(OH)6
18 photos of Mattheddleite associated with SusannitePb4(CO3)2(SO4)(OH)2
14 photos of Mattheddleite associated with LanarkitePb2(SO4)O
12 photos of Mattheddleite associated with AnglesitePbSO4
9 photos of Mattheddleite associated with LeadhillitePb4(CO3)2(SO4)(OH)2
5 photos of Mattheddleite associated with Unnamed (Cu-Pb Silicate ?)Pb, Cu, Si, O ?
4 photos of Mattheddleite associated with ScotlanditePbSO3
4 photos of Mattheddleite associated with LinaritePbCu(SO4)(OH)2
3 photos of Mattheddleite associated with PyromorphitePb5(PO4)3Cl
3 photos of Mattheddleite associated with ElyitePb4Cu(SO4)O2(OH)4 · H2O

Related Minerals - Strunz-mindat GroupingHide

9.AH.Fluorbritholite-(Nd)Ca2Nd3(SiO4)3FHex. 6/m : P63/m
9.AH.05Iimoriite-(Y)Y2[SiO4][CO3]Tric. 1 : P1
9.AH.10Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
9.AH.10Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
9.AH.15SpurriteCa5(SiO4)2(CO3)Mon. 2/m : P21/b
9.AH.15GaluskiniteCa7(SiO4)3(CO3) Mon. 2/m : P21/b
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.20SilicocarnotiteCa5[(SiO4)(PO4)](PO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.25Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex. 6/m : P63/m
9.AH.25HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.AH.25Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AH.25Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
9.AH.25Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25Britholite-(La)Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F)
9.AH.25Calciobritholite(Ca,Y)5(SiO4,PO4)3(OH)
9.AH.35NabimusaiteKCa12(SiO4)4(SO4)2O2FTrig. 3m (3 2/m) : R3m
9.AH.35DargaiteBaCa12(SiO4)4(SO4)2O3Trig. 3m : R3m
9.AH.40ZadoviteBaCa6[(SiO4)(PO4)](PO4)2FTrig. 3m : R3m
9.AH.40GazeeviteBaCa6(SiO4)2(SO4)2OTrig. 3m (3 2/m) : R3m
9.AH.40StracheriteBaCa6(SiO4)2[(PO4)(CO3)]2FTrig. 3m (3 2/m) : R3m
9.AH.45FlamiteCa8-x(Na,K)x(SiO4)4-x(PO4)xOrth. mm2
9.AH.50ByzantieviteBa5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5Trig. 3 : R3
9.AH.55Greenwoodite(Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22Trig. 3m (3 2/m) : P3m1
9.AH.60Kihlmanite-(Ce)Ce2TiO2(SiO4)(HCO3)2(H2O)Tric. 1 : P1
9.AH.65TsangpoiteCa5(PO4)2(SiO4)Hex.
9.AH.70Enalite(Th,REE,Al) [(PO4),(SiO4),(OH)]Tet.

Fluorescence of MattheddleiteHide

In UV light:
Dull yellow in SW

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 MattheddleiteHide

References for MattheddleiteHide

Reference List:
Livingstone, A., Ryback, G., Fejer, E. E., and Stanley, C.J. (1987) Mattheddleite, a new mineral of the apatite group from Leadhills, Strathclyde region. Scottish Journal of Geology, 23, 1-8.
Livingstone, A., Ryback, G., Fejer, E.E., and Stanley, C.J. (1987) Mattheddleite, a new mineral of the apatite group from Leadhills, Strathclyde region. Scottish Journal of Geology: 23: 1-8.
Cooper, M.P., Green, D.I., Braithwaite, R.S.W. (1988) The occurrence of mattheddleite in the Caldbeck Fells, Cumbria: a preliminary note. UK Journal of Mines and Minerals 5, Rockbottom Publications. 21
Jambor, J.L., Bladh, K.W., Scott Ercit, T., Grice, J.D., and Grew, E.S. (1988) New mineral names. American Mineralogist, 73, 929 (abstract of Livingstone et al., 1987).
Steele, I. M., Pluth, J. J., Livingstone, A. (2000) Crystal structure of mattheddleite: a Pb, S, Si phase with the apatite structure. Mineralogical Magazine, 64 (5) 915-921 doi:10.1180/002646100549742
Essene, E.J., Henderson, C.E., and Livingstone, A. (2006) The missing sulphur in mattheddleite, sulphur analysis of sulphates, and paragenetic relations at Leadhills, Scotland. Mineralogical Magazine, 70, 265-280.
Pasero, Marco, Kampf, Anthony R., Ferraris, Cristiano, Pekov, Igor V., Rakovan, John, White, Timothy J. (2010) Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy, 22 (2) 163-179 doi:10.1127/0935-1221/2010/0022-2022
(2023) Mattheddleite. Handbook of Mineralogy. Mineralogical Society of America

Localities for MattheddleiteHide

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.
France
 
  • Occitanie
    • Ariège
      • Saint-Girons
        • Aulus-les-Bains
Gol (2014) +1 other reference
    • Aveyron
      • Villefranche-de-Rouergue
        • Asprières
Leconte J. et al. (2016)
Germany
 
  • Lower Saxony
    • Goslar District
      • Clausthal-Zellerfeld
        • Oberschulenberg
Markus Gerstmann Collection
Italy
 
  • Veneto
    • Vicenza Province
      • Torrebelvicino
        • Mercanti Valley
Boscardin et al. (2014)
Boscardin et al. (2014)
Spain
 
  • Catalonia
    • Tarragona
      • Baix Camp
        • Alforja
Joan Abella i Creus (Joanabellacreus@gmail.com)
        • L'Argentera
Joan Abella i Creus (Joanabellacreus@gmail.com)
UK
 
  • England
    • Cornwall
      • Crantock
BMS Newsletter 79 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
      • St Hilary
Betterton (2000)
    • County Durham
      • Stanhope
Norman Wilson collection
    • Cumbria
      • Allerdale
        • Caldbeck
          • Deer Hills
Cooper et al. (1990) +1 other reference
          • Roughton Gill
Cooper et al. (1988) +4 other references
- (2006)
Cooper et al. (1988) +3 other references
Cooper et al. (1988) +5 other references
Cooper et al. (1988) +4 other references
Luetcke (n.d.)
Stanley et al. (1991)
    • Derbyshire
      • Bolsover District
        • Hodthorpe and Belph
vanadinite and descloizite +1 other reference
    • Somerset
      • Mendip
        • Cranmore
Turner et al. (2010)
  • Scotland
    • Dumfries and Galloway
      • Wanlockhead
        • Wanlock Dod-Whytes Cleuch
S Rust collection
M.Wirth collection
S Rust collection
S.Rust Collection
    • South Lanarkshire
Livingstone et al. (1987)
S Rust collection +1 other reference
S.Rust Collection
        • Wanlock Dod
S.Rust Collection
S.Rust Collection
  • Wales
    • Caerphilly
      • Machen
Minerals of Machen Quarry
    • Ceredigion
      • Ceulanymaesmawr
        • Tal-y-bont
S.Rust Collection
S.Rust Collection
Betterton (1996)
      • Trefeirig
        • Pen-bont Rhydybeddau
Betterton (1996)
S Rust collection
      • Upper Llanfihangell-y-Creuddyn
        • Pontrhydygroes
Green et al. (1996) +2 other references
      • Ysbyty Ystwyth
S Rust collection
S.Rust Collection
USA
 
  • Arizona
    • Maricopa County
      • Osborn Mining District
        • Tonopah
          • Tiger Wash
Raman analyzed at the University of ... +1 other reference
  • California
    • San Bernardino County
      • Silver Lake Mining District
        • Soda Mountains
          • Baker
            • Otto Mountain
Collected by and in the collection of ...
Collected by and in the collection of ...
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