Torreyite Mineral Data

Torreyite Mineral Data +

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General Torreyite Information

Chemical Formula:

(Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O)

Composition:

Molecular Weight = 1,282.62 gm

Magnesium 11.37 % Mg 18.85 % MgO

Manganese 12.85 % Mn 16.59 % MnO

Zinc 20.39 % Zn 25.38 % ZnO

Hydrogen 2.99 % H 26.69 % H₂O

Sulfur 5.00 % S 12.48 % SO₃

Oxygen 47.40 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg₆Mn²⁺₃Zn₄(SO₄)₂(OH)₂₂·8(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1949

Locality:

Link to MinDat.org Location Data.

Torreyite Image

Images:

Torreyite

Comments: Whitish translucent granular torreyite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Torreyite Crystallography

Axial Ratios:

a:b:c =1.7742:1:1.1428

Cell Dimensions:

a = 16.486, b = 9.292, c = 10.619, Z = 2; beta = 95.42° V = 1,619.43 Den(Calc)= 2.63

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): 13.06(1), 5.35(0.9), 3.85(0.8),

Physical Properties of Torreyite

Cleavage:

[010] Good

Color:

Bluish white.

Density:

2.665

Diaphaniety:

Translucent

Hardness:

3 - Calcite

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Torreyite

Gladstone-Dale:

CI meas= 0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2204,KPDmeas= 0.2175,KC= 0.2233

Optical Data:

Biaxial (-), a=1.57, b=1.584, g=1.585, bire=0.0150, 2V(Calc)=28, 2V(Meas)=40.

Calculated Properties of Torreyite

Electron Density:

r_electron=2.63 gm/cc
note: r_Torreyite=2.63 gm/cc.

Fermion Index

Fermion Index = 0.02033
Boson Index = 0.97967

Photoelectric:

PE_Torreyite= 13.57 barns/electron
U=PE_Torreyite x r_electron= 35.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Torreyite is Not Radioactive

Torreyite Classification

Dana Class:

31.1.4.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.1)where (A+ B++)m (XO4)p Zq·x(H2O), where m:p>6:1

(31.1.4)Dana Group

31.1.4.1 Torreyite (Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O) P 2₁/a 2/m

31.1.4.2 Lawsonbauerite (Mn,Mg)9Zn4(SO4)2(OH)22·8(H2O) P 2₁/c 2/m

Strunz Class:

VI/D.04-20 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.04 - Mooreite - Hauckite series

VI/D.04-10 Mooreite (Mg,Zn,Mn)15(SO4)2(OH)26·8(H2O) P 2₁/a 2/m

VI/D.04-20 Torreyite (Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O) P 2₁/a 2/m

VI/D.04-30 Lawsonbauerite (Mn,Mg)9Zn4(SO4)2(OH)22·8(H2O) P 2₁/c 2/m

VI/D.04-50 Hauckite (Mg,Mn)24Zn18Fe3(SO4)4(CO3)2(OH)81(?) P 6/mmm 6/m 2/m 2/m

Other Torreyite Information

References:

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

See Also:

Links to other databases for Torreyite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 - Franklin Minerals(Dunn) 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

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

Torreyite

(Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O)
Dana No: 31.1.4.1 Strunz No: VI/D.04-20
Locality:

Notes: