Yeatmanite Mineral Data

Yeatmanite Mineral Data +

General Yeatmanite Information

Chemical Formula:

Mn++9Zn6Sb+++++2Si4O28

Composition:

Molecular Weight = 1,690.61 gm

Manganese 29.25 % Mn 37.76 % MnO

Zinc 23.21 % Zn 28.89 % ZnO

Silicon 6.65 % Si 14.22 % SiO₂

Antimony 14.40 % Sb 19.13 % Sb₂O₅

Oxygen 26.50 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₉Zn₆Sb₂Si₄O₂₈

Environment:

Metamorphosed, weathered Zn-Mn deposit.

IMA Status:

Valid Species (Pre-IMA) 1938

Locality:

Franklin and Sterling Hill, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Pope Yeatman (1861-1953), U. S. Mining engineer.

Synonym:

ICSD 40367

PDF 35-457

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Yeatmanite Crystallography

Axial Ratios:

a:b:c =0.483:1:0.7807

Cell Dimensions:

a = 5.604, b = 11.602, c = 9.058, Z = 1; alpha = 92.167°, beta = 100.9°, gamma = 77.3° V = 563.75 Den(Calc)= 4.98

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 2.969(1), 2.587(0.6), 2.782(0.6),

Crystal Structure:

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Kato T , Mineralogical Journal , 13 (1986) p.53-64, The crystal structure of yeatmanite, Locality: Franklin, New Jersey, USA

Physical Properties of Yeatmanite

Cleavage:

[100] Good

Color:

Clove brown.

Density:

4.91 - 5.02, Average = 4.96

Fracture:

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

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

4 - Fluorite

Luster:

Vitreous (Glassy)

Streak:

pale brown

Optical Properties of Yeatmanite

Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1783,KPDmeas= 0.1789,KC= 0.1789

Optical Data:

Biaxial (-), a=1.864, b=1.895, g=1.905, bire=0.0410, 2V(Calc)=58, 2V(Meas)=52. Dispersion r > v.

Calculated Properties of Yeatmanite

Electron Density:

r_electron=4.62 gm/cc
note: r_Yeatmanite=4.97 gm/cc.

Fermion Index

Fermion Index = 0.01274
Boson Index = 0.98726

Photoelectric:

PE_Yeatmanite= 65.43 barns/electron
U=PE_Yeatmanite x r_electron= 302.45 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Yeatmanite is Not Radioactive

Yeatmanite Classification

Dana Class:

44.3.6.1 (44)Antimonates

(44.3)with miscellaneous formulae

(44.3.6)Dana Group

44.3.6.1 Yeatmanite Mn9Zn6Sb2Si4O28 P1 1

Strunz Class:

VIII/B.09-20 VIII - Silicates

VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]

VIII/B.09 - Braunite - Langbanite - Katoptrite series

VIII/B.09-03 Braunite-I MnMn6SiO12 I 4₁/acd 4/m 2/m 2/m

VIII/B.09-05 Abswurmbachite CuMn6SiO12 I 4₁/acd 4/m 2/m 2/m

VIII/B.09-07 Neltnerite CaMn6SiO12 I 4₁/acd 4/m 2/m 2/m

VIII/B.09-10* Franciscanite-III Mn6V2Si2(O,OH)14 P 3 3

VIII/B.09-10 Franciscanite-VIII Mn3(V,[])1-x(SiO4)(O,OH)3(x=0.5) P 3 3

VIII/B.09-12* Orebroite-III Mn6(Fe,Sb)2Si2(O,OH)14 P 3 3

VIII/B.09-12 Orebroite-VIII Mn3(Sb,Fe)SiO4(O,OH)3 P 3 3

VIII/B.09-14* Welinite-III Mn6(W,Mg)2Si2(O,OH)14 P 3 3

VIII/B.09-14 Welinite-VIII (Mn,Mg)3(W,Mn)1-x(SiO4)(O,OH)3(x=1/3) P 3 3

VIII/B.09-17 Langbanite (Mn,Ca,Fe)4(Mn,Fe)9SbSi2O24 C 2/m 2/m

VIII/B.09-20 Yeatmanite Mn9Zn6Sb2Si4O28 P1 1

VIII/B.09-30 Katoptrite (Mn,Mg)13(Al,Fe)4Sb2Si2O28 C 2/m 2/m

Other Yeatmanite Information

References:

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

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

Yeatmanite

Mn++9Zn6Sb+++++2Si4O28
Dana No: 44.3.6.1 Strunz No: VIII/B.09-20
Locality:

Notes: