Torreyite Mineral Data

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)

Environment:

Veinlets cutting calcite-franklinite-willemite ore in a metamorphosed stratiform zinc orebody.

IMA Status:

Valid Species (Pre-IMA) 1949

Locality:

Sterling Hill, Ogdensburg, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

Named for John Torrey (1796-1873), American naturalist who early studied Franklin, New Jersey, USA minerals.

Name Pronunciation:

Torreyite + Pronunciation

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

Diaphaneity:

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
Ncalc = 1.59 - 1.6

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:

Bulk Density (Electron Density)=2.63 gm/cc
note: Specific Gravity of Torreyite =2.63 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Torreyite= 13.57 barns/electron
U=PE_Torreyite x rElectron Density= 35.69 barns/cc.

Radioactivity:

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

Torreyite Classification

Dana Class:

31.01.04.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

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

(31.01.04)Dana Group

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

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

Strunz Class:

07.DD.40 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.40 Lawsonbauerite (Mn,Mg)9Zn4(SO4)2(OH)22•8(H2O) P 2₁/c 2/m

07.DD.40 Torreyite (Mg,Mn)9Zn4(SO4)2(OH)22•8(H2O) P 2₁/a 2/m

Other Torreyite Information

References:

NAME( AntBidBlaNic5) 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 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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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: 31.01.04.01 Strunz No: 07.DD.40
Locality:

Notes: