Gravegliaite Mineral Data

Gravegliaite Mineral Data +

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General Gravegliaite Information

Chemical Formula:

Mn++(SO3)·3(H2O)

Composition:

Molecular Weight = 233.00 gm

Manganese 42.44 % Mn 54.80 % MnO

Hydrogen 2.60 % H 23.20 % H₂O

Sulfur 13.76 % S 27.50 % SO₂

Oxygen 41.20 % O

______ ______

100.00 % 105.49 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_1.8(SO₃)·3(H₂O)

IMA Status:

Approved IMA 1991

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 33945

IMA1990-020

PDF 44-1445

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Gravegliaite Crystallography

Axial Ratios:

a:b:c =1.7325:1:1.6961

Cell Dimensions:

a = 9.763, b = 5.635, c = 9.558, Z = 4; V = 525.83 Den(Calc)= 2.94

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 6.83(1), 4.33(0.98), 2.704(0.51),

Crystal Structure:

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Basso R , Lucchetti G , Palenzona A , Zeitschrift fur Kristallographie , 197 (1991) p.97-106, Gravegliaite, MnSO3*3H2O, a new mineral from Val Graveglia, (Northern Apennines, Italy), Locality: Gambatesa mine, Val Graveglia, Northern Apennines, Italy

Physical Properties of Gravegliaite

Cleavage:

[010] Good

Color:

Colorless.

Density:

2.39

Diaphaniety:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Gravegliaite

Gladstone-Dale:

CI meas= 0.018 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.202 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2066,KPDmeas= 0.2541,KC= 0.2589

Optical Data:

Biaxial (+), a=1.59, b=1.596, g=1.636, bire=0.0460, 2V(Calc)=44, 2V(Meas)=41-43.

Calculated Properties of Gravegliaite

Electron Density:

r_electron=2.36 gm/cc
note: r_Gravegliaite=2.39 gm/cc.

Fermion Index

Fermion Index = 0.00123
Boson Index = 0.99877

Photoelectric:

PE_Gravegliaite= 11.48 barns/electron
U=PE_Gravegliaite x r_electron= 27.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Gravegliaite is Not Radioactive

Gravegliaite Classification

Dana Class:

34.2.5.2 (34)Selenites - Tellurites - Sulfites

(34.2)as A++ XO3 · x(H2O)

(34.2.5)Dana Group

34.2.5.1 Hannebachite 2CaSO3·(H2O) Pbna 2/m 2/m 2/m

34.2.5.2 Gravegliaite Mn(SO3)·3(H2O) P nma 2/m 2/m 2/m

Strunz Class:

IV/K.05-05 IV - Oxides

IV/K - Sulfides, selenides, tellurides with [XO3]2- groups and related structures

IV/K.05 - Gravegliaite - sophiite series

IV/K.05-05 Gravegliaite Mn(SO3)·3(H2O) P nma 2/m 2/m 2/m

IV/K.05-10 Hannebachite 2CaSO3·(H2O) Pbna 2/m 2/m 2/m

IV/K.05-15 Orschallite Ca3(SO3)2SO4·12(H2O) R 3c 3 2/m

IV/K.05-20 Graemite CuTeO3·(H2O) Pcmm 2/m 2/m 2/m

IV/K.05-30 Choloalite CuPb(TeO3)2 Unk Cubic

IV/K.05-40 Sophiite Zn2(SeO3)Cl2 Pccn 2/m 2/m 2/m

IV/K.05-70 Burnsite! KCdCu7O2(SeO3)2Cl9 P 6₃/mmc 6/m 2/m 2/m

Other Gravegliaite Information

References:

PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,1990)

See Also:

Links to other databases for Gravegliaite :
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

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Gravegliaite

Mn++(SO3)·3(H2O)
Dana No: 34.2.5.2 Strunz No: IV/K.05-05
Locality:

Notes: