Hydrohetaerolite Mineral Data

Hydrohetaerolite Mineral Data +

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General Hydrohetaerolite Information

Chemical Formula:

Zn2Mn+++4O8·(H2O)

Composition:

Molecular Weight = 496.54 gm

Manganese 44.26 % Mn 63.59 % Mn₂O₃

Zinc 26.34 % Zn 32.78 % ZnO

Hydrogen 0.41 % H 3.63 % H₂O

Oxygen 29.00 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₂Mn³⁺₄O₈·(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1929

Locality:

Link to MinDat.org Location Data.

Hydrohetaerolite Image

Images:

Hydrohetaerolite

Comments: Dull brown patches of hydrohetaerolite in franklinite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hydrohetaerolite Crystallography

Axial Ratios:

a:c = 1:1.57018

Cell Dimensions:

a = 5.735, c = 9.005, Z = 2; V = 296.18 Den(Calc)= 5.57

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4₁/amd

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

By Intensity(I/I_o): 2.47(1), 2.66(0.8), 3.02(0.7),

Physical Properties of Hydrohetaerolite

Cleavage:

[???] Good

Color:

Brownish black, Dark brown.

Density:

4.64

Diaphaniety:

Opaque

Habit:

Botryoidal - "Grape-like" rounded forms (e.g.. malachite).

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

5-6 - Between Apatite and Orthoclase

Luminescence:

Non-fluorescent.

Luster:

Sub Metallic

Magnetism:

Nonmagnetic

Streak:

dark brown

Optical Properties of Hydrohetaerolite

Gladstone-Dale:

CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.171 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2118,KPDmeas= 0.2543,KC= 0.2555

Optical Data:

Uniaxial (-), e=2.1, w=2.26, bire=0.1600.

Calculated Properties of Hydrohetaerolite

Electron Density:

r_electron=4.37 gm/cc
note: r_{Hydrohetaerolite}=4.64 gm/cc.

Fermion Index

Fermion Index = 0.01093
Boson Index = 0.98907

Photoelectric:

PE_{Hydrohetaerolite}= 24.97 barns/electron
U=PE_{Hydrohetaerolite} x r_electron= 109.22 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydrohetaerolite is Not Radioactive

Hydrohetaerolite Classification

Dana Class:

7.2.7.3 (7)Multiple Oxides

(7.2)(A+ B++)2 X4 Spinel group

(7.2.7)Dana Group

7.2.7.1 Hausmannite MnMn2O4 I 4₁/amd 4/m 2/m 2/m

7.2.7.2 Hetaerolite ZnMn2O4 I 4₁/amd 4/m 2/m 2/m

7.2.7.3 Hydrohetaerolite Zn2Mn4O8·(H2O) I 4₁/amd 4/m 2/m 2/m

Strunz Class:

IV/B.05-50 IV - Oxides

IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related)

IV/B.05 - Hausmannite - Filipstadite series

IV/B.05-10 Hausmannite MnMn2O4 I 4₁/amd 4/m 2/m 2/m

IV/B.05-20 Iwakiite Mn(Fe,Mn)2O4 P 4₁/nnm 4/m 2/m 2/m

IV/B.05-30 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m

IV/B.05-40 Hetaerolite ZnMn2O4 I 4₁/amd 4/m 2/m 2/m

IV/B.05-50 Hydrohetaerolite Zn2Mn4O8·(H2O) I 4₁/amd 4/m 2/m 2/m

IV/B.05-60 Marokite CaMn2O4 Pmab 2/m 2/m 2/m

IV/B.05-65 Tegengrenite! (Mg,Mn)2Sb0.5(Mn,Si,Ti)0.5O4 R 3 or R 3- Trig

IV/B.05-80 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m

Other Hydrohetaerolite Information

References:

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

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

Hydrohetaerolite

Zn2Mn+++4O8·(H2O)
Dana No: 7.2.7.3 Strunz No: IV/B.05-50
Locality:

Notes: