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Mammothite

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Formula:
Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2
Sb was originally assumed to be trivalent.
System:
Monoclinic
Colour:
Cerulean blue, ...
Hardness:
3
Name:
Named in 1985 by Donald R. Peacor, Pete J. Dunn, G. Schnorrer-Köhler, and Richard A. Bideaux, for the Mammoth vein (one the the two principal veins at Tiger) and the town of Mammoth, Arizona, which was named for the mine.
May superficially resemble very thinly bladed caledonite. Specimens need verification data.

Classification of Mammothite

Approved 1983
7.BC.60

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
30.1.14.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
26.26

26 : Sulphates with Halide
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First Recorded Occurrence of Mammothite

General Appearance of First Recorded Material:
Teal blue striated crystals
Place of Conservation of First Recorded Material:
Smithsonian Institution
Year of Discovery:
1983
Geological Setting of First Recorded Material:
Oxidation zone
Associated Minerals at First Recorded Locality:

Occurrences of Mammothite

Geological Setting:
Noted in furnace slags reacting with salt water.

Physical Properties of Mammothite

Sub-Vitreous, Resinous
Diaphaneity (Transparency):
Transparent
Colour:
Cerulean blue, blue-green, pale blue
Streak:
Pale blue
Hardness (Mohs):
3
Tenacity:
Very brittle
Cleavage:
Distinct/Good
Distinct on {010}
Fracture:
Irregular/Uneven
Density:
5.21 g/cm3 (Calculated)
Comment:
"measured > 4.2"

Crystallography of Mammothite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 18.93(3) Å, b = 7.22Å, c = 11.35(2) Å
β = 112.43°
Ratio:
a:b:c = 2.622 : 1 : 1.572
Unit Cell Volume:
V 1,433.90 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Tabular to prismatic and acicular crystals, radial aggregates.
X-Ray Powder Diffraction Data:
d-spacingIntensity
10.4 (60)
6.67 (90)
6.08 (60)
5.24 (30)
4.72 (80)
3.59 (30)
3.05 (90)
2.896 (100)
Comments:
ICDD 38-389

Optical Data of Mammothite

Type:
Biaxial (+)
RI values:
nα = 1.868 nβ = 1.892 nγ = 1.928
2V:
Measured: 80° , Calculated: 80°
Birefringence:
0.060
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v
Pleochroism:
Visible
Comments:
in pale blues

Chemical Properties of Mammothite

Formula:
Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2

Sb was originally assumed to be trivalent.
Essential elements:
All elements listed in formula:

Relationship of Mammothite to other Species

7.BC.05D'AnsiteNa21Mg(SO4)10Cl3
7.BC.10AluniteKAl3(SO4)2(OH)6
7.BC.10Ammonioalunite(NH4)Al3(SO4)2(OH)6
7.BC.10Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
7.BC.10ArgentojarositeAgFe33+(SO4)2(OH)6
7.BC.10Beaverite-(Cu)Pb(Fe3+,Cu)3(SO4)2(OH)6
7.BC.10DorallchariteTlFe33+(SO4)2(OH)6
7.BC.10HuangiteCa0.5Al3(SO4)2(OH)6
7.BC.10Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
7.BC.10JarositeKFe3+ 3(SO4)2(OH)6
7.BC.10Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
7.BC.10NatroaluniteNaAl3(SO4)2(OH)6
7.BC.10NatrojarositeNaFe3(SO4)2(OH)6
7.BC.10OsarizawaitePb(Al,Cu)3(SO4)2(OH)6
7.BC.10PlumbojarositePb0.5Fe33+(SO4)2(OH)6
7.BC.10Schlossmacherite(H3O)Al3(SO4)2(OH)6
7.BC.10WalthieriteBa0.5Al3(SO4)2(OH)6
7.BC.10Beaverite-(Zn)Pb(Fe23+Zn)(SO4)2(OH)6
7.BC.15Ye'elimiteCa4Al6(SO4)O12
7.BC.20AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3Cl
7.BC.20NabokoiteKCu7(SO4)5(Te4+O3)OCl
7.BC.25ChlorothioniteK2Cu(SO4)Cl2
7.BC.30EuchlorineKNaCu3(SO4)3O
7.BC.30FedotoviteK2Cu3(SO4)3O
7.BC.35KamchatkiteKCu3(SO4)2OCl
7.BC.40PiypiteK2Cu2(SO4)2O
7.BC.45KlyuchevskiteK3Cu3(Fe3+,Al)(SO4)4O2
7.BC.45AlumoklyuchevskiteK3Cu3(Al,Fe3+)(SO4)4O2
7.BC.50CaledonitePb5Cu2(SO4)3(CO3)(OH)6
7.BC.55WherryitePb7Cu2(SO4)4(SiO4)2(OH)2
7.BC.65LinaritePbCu(SO4)(OH)2
7.BC.65SchmiederitePb2Cu2(Se6+O4)(Se4+O3)(OH)4
7.BC.65MunakataitePb2Cu2(Se4+O3)(SO4)(OH)4
7.BC.70ChenitePb4Cu(SO4)2(OH)6
7.BC.75KrivovichevitePb3Al(SO4)(OH)7
7.BC.80AnhydrokainiteKMg(SO4)Cl
26.1KogarkoiteNa3(SO4)F
26.2SulphohaliteNa6(SO4)2FCl
26.3SchaireriteNa3(SO4)(F,Cl)
26.4GaleiteNa15(SO4)5F4Cl
26.5ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
26.6ChlorothioniteK2Cu(SO4)Cl2
26.7KamchatkiteKCu3(SO4)2OCl
26.8SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
26.9AubertiteCuAl(SO4)2Cl · 14H2O
26.10Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
26.11Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O
26.12D'AnsiteNa21Mg(SO4)10Cl3
26.13AnhydrokainiteKMg(SO4)Cl
26.14KainiteKMg(SO4)Cl · 3H2O
26.15Mosesite(Hg2N)(Cl,SO4,MoO4) · H2O
26.16Kleinite(Hg2N)(Cl,SO4) · nH2O
26.17WilcoxiteMgAl(SO4)2F · 17H2O
26.18CreediteCa3SO4Al2F8(OH)2 · 2H2O
26.19LannoniteMg2Ca4Al4(SO4)8F8 · 24H2O
26.20Chukhrovite-(Y)Ca3(Y,Ce)[F|SO4|(AlF6)2] · 10H2O
26.21Chukhrovite-(Ce)Ca3(Ce,Y)[F|SO4|(AlF6)2] · 10H2O
26.22GrandreefitePb2(SO4)F2
26.23PseudograndreefitePb6(SO4)F10
26.24SundiusitePb10(SO4)O8Cl2
26.25CaracoliteNa3Pb2(SO4)3Cl
26.27AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3Cl
26.28XitieshaniteFe3+(SO4)Cl · 6H2O
26.29NabokoiteKCu7(SO4)5(Te4+O3)OCl

Other Names for Mammothite

Name in Other Languages:

Other Information

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 Mammothite

Reference List:
Peacor, D.R., Dunn, P.J., Schnorrer-Köhler, G. & Bideaux, R.A. (1985): Mammothite, a new mineral from Tiger, Arizona and Laurium, Greece. The Mineralogical Record, 16, 117-120.

Effenberger, H. (1985): The crystal structure of mammothite, Pb6Cu4AlSbO2(OH)16Cl4(SO4)2. Tschermaks Mineralogische und Petrographische Mitteilungen 34, 279-288.

American Mineralogist (1986): 71: 229-230.

Internet Links for Mammothite

Localities for Mammothite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
Schnorrer-Köhler, G., Standfuss, K. & Standfuss, L. (1985): Neue Schlackenmineralien von Lavrion. Lapis, 10 (5), 13-16; 50.
        • Sounion area
van Kalmthout, P. (2012): De slakkenmineralen van Lavrion (Gr.) - Ontwikkelingen na 1996, inclusief een archeologische ontdekking. GEA, 45 (1), 14-19 (in Dutch); Fritz Schreiber Collection
Stephan Wolfsried collection
Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian, (1996) Laurion: The Minerals in the Ancient Slags, Janssen Print, Nijmegen, The Netherlands
        • 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
      • Piombino
Muenchener Micromounter-Lithothek
USA
 
  • Arizona
    • Maricopa Co.
      • Painted Rock Mts
        • Painted Rock District
          • Theba
EDX analysis Association Jean WYART, Paris - specimen Georges FAVREAU
    • Pinal Co.
      • Mammoth District
        • Tiger
          • St. Anthony deposit
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 287; Peacor, D., et al (1985), Mammothite, a new mineral from Tiger, AZ, and Laurium, Greece, Min.Rec.: 15: 117-120.
Mineral and/or Locality  
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