Ingersonite Mineral Data

General Ingersonite Information

Chemical Formula:

Ca3Mn++Sb+++++4O14

Composition:

Molecular Weight = 882.79 gm

Calcium 13.30 % Ca 18.61 % CaO

Magnesium 0.14 % Mg 0.23 % MgO

Manganese 6.60 % Mn 8.52 % MnO

Iron 0.06 % Fe 0.08 % FeO

Antimony 54.48 % Sb 72.37 % Sb₂O₅

Oxygen 25.10 % O

Fluorine 0.32 % F 0.32 % F

- % F -0.14 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca_2.93Mn²⁺_1.06Fe²⁺_0.01Sb_3.95Mg_0.05F_0.15O_13.85

Environment:

Rare accessory to Mn ores.

IMA Status:

Approved IMA 1988

Locality:

Found on the dumps at the Lanban mine, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for F. Earl Ingerson (1906-1993), U. S. Geochemist.

Name Pronunciation:

Ingersonite + Pronunciation

Ingersonite Image

Images:

Ingersonite

Comments: Yellowish green crystals of ingersonite to about 0.7mm embedded in matrix rich in dark grains of flipstadite.
Location: Langban, Varmland, Sweden. Scale: 14x10x6mm.
© Tom Loomis / Dakota Matrix

Ingersonite Crystallography

Axial Ratios:

a:c = 1:2.41746

Cell Dimensions:

a = 7.282, c = 17.604, Z = 3; V = 808.43 Den(Calc)= 5.44

Crystal System:

Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3₁21

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

By Intensity(I/I_o): 2.971(1), 1.55(0.8), 1.819(0.7),

Crystal Structure:

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Bonazzi P , Bindi L , American Mineralogist , 92 (2007) p.947-953, The crystal structure of ingersonite, Ca3Mn2+Sb5+4O14, and its relationships with, pyrochlore, Locality: Langban mine, Varmland, Sweden

Physical Properties of Ingersonite

Cleavage:

{0001} Perfect

Color:

Brownish yellow.

Diaphaneity:

Transparent to Translucent

Habit:

Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.

Hardness:

6.5 - Pyrite

Luster:

Vitreous (Glassy)

Streak:

brownish yellow

Optical Properties of Ingersonite

Gladstone-Dale:

CI calc= -0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1696,KC= 0.1674
Ncalc = 1.91

Optical Data:

Uniaxial (-), e=1.91-1.92, w=1.93, bire=0.0100-0.0200.

RL Color:

Light gray with yellow and white internal reflections.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Ingersonite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	11.16	11.40
420 nm	10.94	11.13
440 nm	10.74	10.88
460 nm	10.52	10.66
480 nm	10.34	10.48
500 nm	10.18	10.32
520 nm	10.05	10.19
540 nm	9.96	10.09
560 nm	9.91	10.04
580 nm	9.89	10.01
600 nm	9.89	10.02
620 nm	9.90	10.03
640 nm	9.90	10.03
660 nm	9.91	10.03
680 nm	9.91	10.03
700 nm	9.91	10.03

**Calculated Relative Intensity Colors of Ingersonite in Air**
Relative Intensity	0%	90%	100%	180%	270%	360%	450%	540%	630%	720%	810%	880%
R₁
R₂

Calculated Properties of Ingersonite

Electron Density:

Bulk Density (Electron Density)=4.92 gm/cc
note: Specific Gravity of Ingersonite =5.44 gm/cc.

Fermion Index:

Fermion Index = 0.0004511343
Boson Index = 0.9995488657

Photoelectric:

PE_Ingersonite= 180.63 barns/electron
U=PE_Ingersonite x rElectron Density= 889.48 barns/cc.

Radioactivity:

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

Ingersonite Classification

Dana Class:

44.01.02.01 (44)Antimonates

(44.01)(A)2 (X2 O6) (O,OH,F)

(44.01.02)Dana Group

44.01.02.01 Ingersonite Ca3MnSb4O14 P 3₁21 3 2

Strunz Class:

04.DH.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.D - Metal:Oxygen = 1:2 and similar

04.DH -With large (± medium-sized) cations; sheets of edge-sharing octahedra

04.DH.40 Ingersonite Ca3MnSb4O14 P 3₁21 3 2

Other Ingersonite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin v92:947) OPTIC PROP.(AntBidBlaNic3, Dana8)

See Also:

Links to other databases for Ingersonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Ask about Ingersonite here :
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Print or Cut-and-Paste your Ingersonite Specimen Label here :

Ingersonite

Ca3Mn++Sb+++++4O14
Dana No: 44.01.02.01 Strunz No: 04.DH.40
Locality:

Notes: