Hydroromarchite Mineral Data

Hydroromarchite Mineral Data +

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General Hydroromarchite Information

Chemical Formula:

Sn3O2(OH)2

Composition:

Molecular Weight = 422.14 gm

Tin 84.36 % Sn 95.73 % SnO

Hydrogen 0.48 % H 4.27 % H₂O

Oxygen 15.16 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Sn₃O₂(OH)₂

Environment:

An alteration product on tin pannikins dropped in a river between 1801 and 1821.

IMA Status:

Approved IMA 1971

Locality:

Boundary Falls, Winnipeg River, Ontario, Canada. Link to MinDat.org Location Data.

Name Origin:

Named as the hydrous version of romarchite.

Synonym:

ICSD 203206

IMA1969-007

PDF 25-11303

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Hydroromarchite Crystallography

Axial Ratios:

a:c = 1:1.14195

Cell Dimensions:

a = 7.89, c = 9.01, Z = 2; V = 560.89 Den(Calc)= 2.50

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/mnc

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

By Intensity(I/I_o): 3.5(1), 2.773(0.9), 2.961(0.8),

Physical Properties of Hydroromarchite

Color:

White.

Diaphaniety:

Semitransparent

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Streak:

white

Optical Properties of Hydroromarchite

Optical Data:

NCalc= 1.37 - from Gladstone-Dale relationship (KC = 0.1485) where Ncalc=Dcalc*KC+1

Calculated Properties of Hydroromarchite

Electron Density:

r_electron=2.18 gm/cc
note: r_{Hydroromarchite}=2.50 gm/cc.

Fermion Index

Fermion Index = 0.14028
Boson Index = 0.85972

Photoelectric:

PE_{Hydroromarchite}= 266.46 barns/electron
U=PE_{Hydroromarchite} x r_electron= 580.71 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydroromarchite is Not Radioactive

Hydroromarchite Classification

Dana Class:

6.4.2.1 (6)Hydroxides and Oxides Containing Hydroxyl

(6.4)containing multiple cations

(6.4.2)Dana Group

6.4.2.1 Hydroromarchite Sn3O2(OH)2 P 4/mnc 4/m 2/m 2/m

Strunz Class:

IV/A.08-20 IV - Oxides

IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)

IV/A.08 - Periclase Group, Romarchite ? - Hydroromarchite ? series

IV/A.08-10 Romarchite SnO P 4/nmm 4/m 2/m 2/m

IV/A.08-20 Hydroromarchite Sn3O2(OH)2 P 4/mnc 4/m 2/m 2/m

Other Hydroromarchite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3)

See Also:

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

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

Hydroromarchite

Sn3O2(OH)2
Dana No: 6.4.2.1 Strunz No: IV/A.08-20
Locality:

Notes: