Sonolite Mineral Data

Sonolite Mineral Data +

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General Sonolite Information

Chemical Formula:

Mn9(SiO4)4(OH,F)2

Composition:

Molecular Weight = 897.79 gm

Manganese 55.07 % Mn 71.11 % MnO

Silicon 12.51 % Si 26.77 % SiO₂

Hydrogen 0.17 % H 1.50 % H₂O

Oxygen 31.19 % O

Fluorine 1.06 % F 1.06 % F

- % F -0.45 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₉(SiO₄)₄(OH)_1.5F_0.5

IMA Status:

Approved IMA 1963

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 75545

PDF 22-725

Sonolite Image

Images:

Sonolite

Comments: Dark red anhedral grains of sonolite in matrix.
Location: Crouse mine, Bald Knob, Alleghany Co., North Carolina, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Sonolite Crystallography

Axial Ratios:

a:b:c =2.1844:1:2.9364

Cell Dimensions:

a = 10.66, b = 4.88, c = 14.33, Z = 2; beta = 100.566° V = 732.82 Den(Calc)= 4.07

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/a

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

By Intensity(I/I_o): 1.743(1), 2.869(1), 2.651(0.7),

Physical Properties of Sonolite

Cleavage:

[???] Indistinct

Color:

Dark brown, Dark reddish brown, Pink brown, Reddish orange.

Density:

3.82

Diaphaniety:

Transparent to Translucent

Hardness:

5.5 - Knife Blade

Luster:

Vitreous (Glassy)

Optical Properties of Sonolite

Gladstone-Dale:

CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1908,KPDmeas= 0.2033,KC= 0.2014

Optical Data:

Biaxial (-), a=1.765, b=1.778, g=1.787, bire=0.0220, 2V(Calc)=78, 2V(Meas)=75.5-82.

Calculated Properties of Sonolite

Electron Density:

r_electron=3.63 gm/cc
note: r_Sonolite=3.82 gm/cc.

Fermion Index

Fermion Index = 0.00599
Boson Index = 0.99401

Photoelectric:

PE_Sonolite= 14.79 barns/electron
U=PE_Sonolite x r_electron= 53.75 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sonolite is Not Radioactive

Sonolite Classification

Dana Class:

52.3.2d.3 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.3)with cations in [6] coordination only

(52.3.2d)Humite group (Clinohumite series)

52.3.2d.1 Clinohumite (Mg,Fe)9(SiO4)4(F,OH)2 P 2₁/c 2/m

52.3.2d.2 Jerrygibbsite (Mn,Zn)9(SiO4)4(OH)2 Pbn21 mm2

52.3.2d.3 Sonolite Mn9(SiO4)4(OH,F)2 P 2₁/a 2/m

52.3.2d.4 Hydroxylclinohumite! Mg9(SiO4)4(OH,F)2 P 2₁/c 2/m

Strunz Class:

VIII/B.04-110 VIII - Silicates

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

VIII/B.04 - Humite group

VIII/B.04-10 Norbergite Mg3(SiO4)(F,OH)2 P nma 2/m 2/m 2/m

VIII/B.04-20 Chondrodite (Mg,Fe)5(SiO4)2(F,OH)2 P 2₁/c 2/m

VIII/B.04-30 Humite (Mg,Fe)7(SiO4)3(F,OH)2 P nma 2/m 2/m 2/m

VIII/B.04-40 Clinohumite (Mg,Fe)9(SiO4)4(F,OH)2 P 2₁/c 2/m

VIII/B.04-42 Hydroxylclinohumite! Mg9(SiO4)4(OH,F)2 P 2₁/c 2/m

VIII/B.04-50 Ribbeite (Mn,Mg)5(SiO4)2(OH)2 P nma 2/m 2/m 2/m

VIII/B.04-60 Alleghanyite Mn5(SiO4)2(OH)2 P 2₁/a 2/m

VIII/B.04-70 Reinhardbraunsite Ca5(SiO4)2(OH,F)2 P 2₁/a 2/m

VIII/B.04-80 Manganhumite (Mn,Mg)7(SiO4)3(OH)2 Pbnm 2/m 2/m 2/m

VIII/B.04-90 Leucophoenicite Mn7(SiO4)3(OH)2 P 2₁/a 2/m

VIII/B.04-100 Jerrygibbsite (Mn,Zn)9(SiO4)4(OH)2 Pbn21 mm2

VIII/B.04-110 Sonolite Mn9(SiO4)4(OH,F)2 P 2₁/a 2/m

Other Sonolite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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

Sonolite

Mn9(SiO4)4(OH,F)2
Dana No: 52.3.2d.3 Strunz No: VIII/B.04-110
Locality:

Notes: