Montetrisaite Mineral Data

General Montetrisaite Information

Chemical Formula:

Cu6(SO4)(OH)10•H2O

Composition:

Molecular Weight = 658.76 gm

Zinc 0.30 % Zn 0.37 % ZnO

Copper 57.59 % Cu 72.09 % CuO

Hydrogen 1.84 % H 16.41 % H₂O

Sulfur 4.53 % S 11.30 % SO₃

Oxygen 35.75 % O

______ ______

100.00 % 100.17 % = TOTAL OXIDE

Empirical Formula:

Cu_5.97Zn_0.03(OH)₁₀•(H₂O)(SO₄)_0.93

Environment:

Appears to be a product of oxidation of sulfide minerals such as chalcopyrite, pyrite, sphalerite and galena. Dimorphous with redgillite.

IMA Status:

Approved IMA 2007 (Dana # Added)

Locality:

Monte Trisa, Torrebelvicino, Vicenza, Italy Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA2007-009

Montetrisaite Image

Images:

Montetrisaite

Comments: SEM image of montetrisaite showing the splintery fracture. {010} face is shown. (CanMin, v47:143).
Location: Monte Trisa, Torrebelvicino, Vicenza, Italy. Scale: See Image.
© Canadian Mineralogist

Montetrisaite Crystallography

Axial Ratios:

a:b:c =0.1761:1:0.8728

Cell Dimensions:

a = 2.989, b = 16.97, c = 14.812, Z = 2; V = 751.31 Den(Calc)= 2.91

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: C mc2₁

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

By Intensity(I/I_o): 7.45(1), 2.166(0.9), 2.341(0.9),2.654(0.8), 3.73(0.35), 1.598(0.2), 2.788(0.18), 2.503(0.14),

Physical Properties of Montetrisaite

Cleavage:

{010} Very Good, {100} Distinct, {001} Poor

Color:

Blue.

Diaphaneity:

Transparent

Fracture:

Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

pale blue

Optical Properties of Montetrisaite

Gladstone-Dale:

CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.212,KC= 0.1989
Ncalc = 1.58

Optical Data:

Biaxial (?), a=1.584, g=1.65, bire=0.0660

Calculated Properties of Montetrisaite

Electron Density:

Bulk Density (Electron Density)=2.82 gm/cc
note: Specific Gravity of Montetrisaite =2.91 gm/cc.

Fermion Index:

Fermion Index = 0.0006359679
Boson Index = 0.9993640321

Photoelectric:

PE_{Montetrisaite}= 25.54 barns/electron
U=PE_{Montetrisaite} x rElectron Density= 71.92 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Montetrisaite is Not Radioactive

Montetrisaite Classification

Dana Class:

31.02.09.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.02)where (A+ B++)6 (XO4) Zq·x(H2O)

(31.02.09)Dana Group

31.02.09.01 Montetrisaite! Cu6(SO4)(OH)10•H2O C mc2₁ mm2

Strunz Class:

07.DD.85 07 - SULFATES (SELENATES, TELLURATES)

07.D - Sulfates (selenates, etc.) with additional anions, with H2O

07.DD -With only medium-sized cations; sheets of edge-sharing octahedra

07.DD.85 Montetrisaite! Cu6(SO4)(OH)10•H2O C mc2₁ mm2

Other Montetrisaite Information

References:

NAME( CanMin, v47:143) PHYS. PROP.(CanMin, v47:143) OPTIC PROP.(CanMin, v47:143)

See Also:

Links to other databases for Montetrisaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Montetrisaite

Cu6(SO4)(OH)10•H2O
Dana No: 31.02.09.01 Strunz No: 07.DD.85
Locality:

Notes: