Sussexite Mineral Data

Sussexite Mineral Data +

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General Sussexite Information

Chemical Formula:

MnBO2(OH)

Composition:

Molecular Weight = 114.75 gm

Manganese 47.87 % Mn 61.82 % MnO

Boron 9.42 % B 30.33 % B₂O₃

Hydrogen 0.88 % H 7.85 % H₂O

Oxygen 41.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺BO₂(OH)

IMA Status:

Valid Species (Pre-IMA) 1868

Locality:

Link to MinDat.org Location Data.

Sussexite Image

Images:

Sussexite

Comments: Red resinous sussexite in ore matrix.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sussexite Crystallography

Axial Ratios:

a:b:c =0.3066:1:1.2004

Cell Dimensions:

a = 3.287, b = 10.718, c = 12.866, Z = 8; beta = 95.8° V = 450.95 Den(Calc)= 3.38

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 6.32(1), 2.478(0.8), 2.744(0.8),

Physical Properties of Sussexite

Color:

White, Pink, Straw yellow.

Density:

3.12

Diaphaniety:

Translucent

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Luster:

Pearly

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Sussexite

Gladstone-Dale:

CI meas= -0.065 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2101,KPDmeas= 0.2276,KC= 0.2137

Optical Data:

Biaxial (-), a=1.67, b=1.728, g=1.732, bire=0.0620

Calculated Properties of Sussexite

Electron Density:

r_electron=3.24 gm/cc
note: r_Sussexite=3.38 gm/cc.

Fermion Index

Fermion Index = 0.01894
Boson Index = 0.98106

Photoelectric:

PE_Sussexite= 12.45 barns/electron
U=PE_Sussexite x r_electron= 40.34 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sussexite is Not Radioactive

Sussexite Classification

Dana Class:

25.2.1.1 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.2)Dana Type

(25.2.1)Dana Group

25.2.1.1 Sussexite MnBO2(OH) P 2₁/c 2/m

25.2.1.2 Szaibelyite MgBO2(OH) P 2₁/a 2/m

Strunz Class:

V/H.02-20 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary groups [B2O5]4- to [B2O7]2-

V/H.02 - Szaibelyite - Sibirskite series

V/H.02-10 Szaibelyite MgBO2(OH) P 2₁/a 2/m

V/H.02-20 Sussexite MnBO2(OH) P 2₁/c 2/m

V/H.02-30 Sibirskite CaHBO3 P 2/m 2/m

V/H.02-35 Parasibirskite! Ca2B2O5·(H2O) P 2₁/m 2/m

Other Sussexite 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 Sussexite Specimen Label here :

Sussexite

MnBO2(OH)
Dana No: 25.2.1.1 Strunz No: V/H.02-20
Locality:

Notes: