Mammothite Mineral Data

Mammothite Mineral Data +

[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee

General Mammothite Information

Chemical Formula:

Pb6Cu4AlSb+++++O2(SO4)2Cl4(OH)16

Composition:

Molecular Weight = 2,284.17 gm

Aluminum 1.18 % Al 2.23 % Al₂O₃

Copper 11.13 % Cu 13.93 % CuO

Antimony 5.33 % Sb 7.08 % Sb₂O₅

Hydrogen 0.71 % H 6.31 % H₂O

Lead 54.43 % Pb 58.63 % PbO

Sulfur 2.81 % S 7.01 % SO₃

Chlorine 6.21 % Cl 6.21 % Cl

- % Cl -1.40 % -O=Cl₂

Oxygen 18.21 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₆Cu₄AlSbO₂(SO₄)₂Cl₄(OH)₁₆

Environment:

Secondary lead mineral.

IMA Status:

Approved IMA 1985

Locality:

Mammoth vein, Tiger, Arizona, USA and from Laurium, Attika, Greece. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 30992

PDF 38-389

Mammothite Image

Images:

Mammothite

Comments: Sparse blue crystalline mammothite in slag.
Location: Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mammothite Crystallography

Axial Ratios:

a:b:c =2.5825:1:1.573

Cell Dimensions:

a = 18.933, b = 7.331, c = 11.532, Z = 2; beta = 112.43° V = 1,479.52 Den(Calc)= 5.13

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.896(1), 6.67(0.9), 4.72(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

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

Physical Properties of Mammothite

Cleavage:

[010] Distinct

Color:

Bright blue, Greenish blue, Pale blue.

Density:

5.25

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

pale blue

Optical Properties of Mammothite

Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1747,KPDmeas= 0.1707,KC= 0.1706

Optical Data:

Biaxial (+), a=1.868, b=1.892, g=1.928, bire=0.0600, 2V(Calc)=80, 2V(Meas)=80.

Pleochroism (x):

pale blue.

Pleochroism (y):

blue.

Pleochroism (z):

blue.

Calculated Properties of Mammothite

Electron Density:

r_electron=4.58 gm/cc
note: r_Mammothite=5.25 gm/cc.

Fermion Index

Fermion Index = 0.12058
Boson Index = 0.87942

Photoelectric:

PE_Mammothite= 982.11 barns/electron
U=PE_Mammothite x r_electron=4,496.54 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Mammothite is Not Radioactive

Mammothite Classification

Dana Class:

30.1.14.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.1)where (A B)m (XO4)p Zq where m:p>2:1

(30.1.14)Dana Group

30.1.14.1 Mammothite Pb6Cu4AlSbO2(SO4)2Cl4(OH)16 C 2/m 2/m

Strunz Class:

VI/B.10-50 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size

VI/B.10 - Linarite - Mammothite series

VI/B.10-10 Linarite PbCu(SO4)(OH)2 P 2₁/m 2/m

VI/B.10-20 Schmiederite Pb2Cu2(SeO3)(SeO4)(OH)4 P 2₁/m 2/m

VI/B.10-30 Chenite Pb4Cu(SO4)2(OH)6 P1 1

VI/B.10-40 Elyite Pb4Cu(SO4)O2(OH)4·(H2O) P 2₁/c 2/m

VI/B.10-50 Mammothite Pb6Cu4AlSbO2(SO4)2Cl4(OH)16 C 2/m 2/m

Other Mammothite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Mammothite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

Search for Mammothite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Mammothite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Mammothite Mineral Data :

Ask about Mammothite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Mammothite Specimen Label here :

Mammothite

Pb6Cu4AlSb+++++O2(SO4)2Cl4(OH)16
Dana No: 30.1.14.1 Strunz No: VI/B.10-50
Locality:

Notes: