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About SussexiteHide

White, lilac / lavender, black (perhaps due to alteration or inclusions), also golden-brown; colourless in transmitted light
Silky, Dull, Earthy
Specific Gravity:
Crystal System:
Named in 1868 by George Jarvis Brush after the type localities in Sussex County, New Jersey, USA (location of the Franklin and Sterling Hill orebodies). The name was not explicitly stated to be for "Sussex County" in print, but the understanding was probally known informally and for obvious reasons.
Often fibrous to acicular. At the type localities, often found in fine-grained cherty masses varying in color from pale purple, lilac, lavender, or rose pink or in white to tan fibrous veins. Sussexite-Szaibelyite Series. The manganese analogue of Szaibelyite.

Visit for gemological information about Sussexite.

Classification of SussexiteHide

Approved, 'Grandfathered' (first described prior to 1959)

B : Diborates
A : Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.

2 : Diborates

9 : Borates
7 : Borates of Mn

Physical Properties of SussexiteHide

Silky, Dull, Earthy
Transparent, Translucent
White, lilac / lavender, black (perhaps due to alteration or inclusions), also golden-brown; colourless in transmitted light
May be orange due to zincite inclusions
Sub-Conchoidal, Fibrous
3.30 g/cm3 (Measured)    3.43 g/cm3 (Calculated)

Optical Data of SussexiteHide

Biaxial (-)
RI values:
nα = 1.670 nβ = 1.728 nγ = 1.732
Measured: 25°
Max Birefringence:
δ = 0.062
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v strong

Chemical Properties of SussexiteHide

Common Impurities:

Crystallography of SussexiteHide

Crystal System:
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 2
P21 21 2
Cell Parameters:
a = 10.70 Å, b = 12.77 Å, c = 3.25 Å
a:b:c = 0.838 : 1 : 0.255
Unit Cell V:
444.08 ų (Calculated from Unit Cell)
Veinlets and masses with a felted or matted fibrous structure; also parallel-fibrous or transverse-fibrous veinlets. Chert-like masses. Microscopically observed as minute laths or flattened fibers.

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0015408SussexiteHoffmann C, Armbruster T (1995) Crystal structure of a (001) twinned sussexite Mn2B2O4(OH)2 from the Kalahari Manganese Field South Africa Schweizerische Mineralogische und Petrographische Mitteilungen 75 123-1331995Nchwaning II Mine, Kalahari Manganese Field, South Africa0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.32 Å(100)
5.33 Å(20)
4.14 Å(30)
3.95 Å(30)
3.43 Å(40)
3.32 Å(40)
3.11 Å(40)
3.01 Å(10)
2.889 Å(20)
2.744 Å(80)
2.672 Å(40)
2.616 Å(40)
2.478 Å(80)
2.404 Å(40)
2.257 Å(40)
2.129 Å(40)
2.050 Å(30)
1.973 Å(20)
1.912 Å(10)
1.861 Å(30)
1.832 Å(30)
1.788 Å(60)
1.742 Å(40)
1.695 Å(30)
1.649 Å(30)
1.629 Å(30)
1.614 Å(10)
1.563 Å(30)
1.543 Å(30)
1.517 Å(30)
1.506 Å(20)
1.489 Å(10)
1.457 Å(10)
1.438 Å(20)
1.408 Å(20)
1.388 Å(20)
1.369 Å(40)
1.332 Å(20)
1.313 Å(20)
ICDD 13-599 (Gonzen, Switzerland); series with szaibelyite

Type Occurrence of SussexiteHide

Other Language Names for SussexiteHide

Relationship of Sussexite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
36 photos of Sussexite associated with ZinciteZnO
8 photos of Sussexite associated with CalciteCaCO3
8 photos of Sussexite associated with FrankliniteZn2+Fe3+2O4
6 photos of Sussexite associated with WillemiteZn2SiO4
5 photos of Sussexite associated with Serpentine SubgroupD3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
4 photos of Sussexite associated with HodgkinsoniteMn2+Zn2(SiO4)(OH)2
2 photos of Sussexite associated with FluoboriteMg3(BO3)(F,OH)3
2 photos of Sussexite associated with HetaeroliteZnMn2O4
2 photos of Sussexite associated with SarkiniteMn2+2(AsO4)(OH)
2 photos of Sussexite associated with Wiserite(Mn2+,Mg)14(B2O5)4(OH)8 · (Si,Mg)(O,OH)4Cl

Related Minerals - Nickel-Strunz GroupingHide

6.BA.20Wiserite(Mn2+,Mg)14(B2O5)4(OH)8 · (Si,Mg)(O,OH)4ClTet.

Related Minerals - Dana Grouping (8th Ed.)HideélyiteMgBO2(OH)Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.7.5Wiserite(Mn2+,Mg)14(B2O5)4(OH)8 · (Si,Mg)(O,OH)4ClTet.
9.7.9BlatteriteSb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
9.7.10TusioniteMn2+Sn4+[BO3]2Trig. 3 : R3

Fluorescence of SussexiteHide

Not fluorescent in UV

Other InformationHide

IR Spectrum:
Franklin material (Mg-rich variety) [cm-1]: 3560, 3515, 2890w, 2770w, 2585w, 2490, 2355sh, 2015w, 1895w, 1461sh, 1443s, 1361s, 1275sh, 1261s, 1225s, 993, 967, 826, 702s, 688, 674, 620s, 530, 514, 467w, 441, 401, 380
Slowly soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for SussexiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brush (1868) American Journal of Science, 2nd. series: 46, 140 and 240-243.
Penfield and Sperry (1888) American Journal of Science: 36: 323.
Poitevin and Ellsworth (1924) American Mineralogist: 9: 188.
Palache, C. (1928) American MIneralogist: 13: 323 (Bauer analysis).
Slawson (1934) American Mineralogist: 19: 575.
Schaller (1942) American Mineralogist: 27: 467.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 375-377.
Schweizerische mineralogische und petrographische Mitteilungen: 75 (1995): 123-133.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.

Internet Links for SussexiteHide

Localities for SussexiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Pring, A., Francis, G. & Birch, W. D. (1992): Nissonite, namibite, and other additions to the mineral suite from Iron Monarch, South Australia. Australian Mineral. 6, 31-39. ; Pring A, Birch W D (1993) Gatehouseite, a new manganese hydroxy phosphate from Iron Monarch, South Australia. Mineralogical Magazine 57, 309-313
  • Styria
    • Bruck-Mürzzuschlag District
      • Sankt Barbara im Mürztal
        • Veitsch
          • Kleinveitsch
            • Kaiblinggraben
Postl, W. et al. (2000)
  • Occitanie
    • Hautes-Pyrénées
Le Règne Minéral 47: 5-21
      • Bagnères-de-Bigorre
        • Vielle-Aure
DE ASCENCAO GUEDES R., TIXADOR Y., CASTERET A. & GOUJOU JC. (2002) La mine de Coustou, Vielle-Aure, Hautes-Pyrénées. Le Règne Minéral, 47, 23-31. (in french)
  • Liguria
    • Genoa
      • Ne
        • Reppia
          • Monte Copello
Rivista Mineralogica Italiana, (4), 131
  • Fukui Prefecture
    • Mikatakaminaka District
      • Wakasa-cho
Anovitz, L.M. and Grew, E.S. (2002) Mineralogy, petrology and geochemistry of boron: an introduction, p 23 (in Reviews in Mineralogy, vol 33, Mineralogical Society of America).; 加藤昭, & 松原聰. (1980). 本邦産マンガン硼酸塩鉱物. 鉱物学雜誌, 14(Special3), 86-97.
  • Iwate Prefecture
    • Kunohe-gun
      • Noda-mura
Dr. Matsuo Nambu collection (curated at Geological Survey of Japan)
  • Mie Prefecture
    • Watarai District
      • Watarai town
Masutomi Museum specimen (Kyoto); 加藤昭, & 松原聰. (1980). 本邦産マンガン硼酸塩鉱物. 鉱物学雜誌, 14(Special3), 86-97.
  • Tochigi Prefecture
Fukuoka, M. (1981) Memoirs of the Faculty of Science, Kyushu University, Series D, Geology, 24, #4, 207-252.; 加藤昭, & 松原聰. (1980). 本邦産マンガン硼酸塩鉱物. 鉱物学雜誌, 14(Special3), 86-97.
加藤昭, & 松原聰. (1980). 本邦産マンガン硼酸塩鉱物. 鉱物学雜誌, 14(Special3), 86-97.
    • Kanuma City
Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese)
  • Tokyo Metropolis
    • Nishitama district
      • Okutama-cho
加藤昭, & 松原聰. (1980). 本邦産マンガン硼酸塩鉱物. 鉱物学雜誌, 14(Special3), 86-97.
  • Otjozondjupa Region
    • Grootfontein
      • Kombat
Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
North Korea
  • North Hwanghae Province
    • Suan County
Dana 7:II::323,370,376.
South Africa
  • Northern Cape
    • Kalahari manganese field
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) pp 293; Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa: pp 246.
      • Kuruman
        • N'Chwaning Mines
Minerals of South Africa
  • St. Gallen
    • Sarganserland
      • Sargans
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Verlag Wepf & Co. (Basel), p. 430
  • Michigan
    • Iron Co.
Palache et al (1951), Dana's System of Mineralogy, seventh ed., vol. II: 376, 389; Rocks & Minerals: 58: 111 & 62: 166.
      • Stambaugh
Rocks & Min.:58:109.
  • New Jersey
    • Sussex County
      • Franklin Mining District
        • Franklin
Palache(1935):127; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 376; Dunn, P.J. (1995): Part 5: 642.
        • Ogdensburg
          • Sterling Hill
Frondel, C. & Ito, J.: Am.Min.:50:502-503 (1965); Dunn(1995):Pt5:642.
Peter Chin
  • Utah
    • Salt Lake Co.
      • Wasatch Mountains (Wasatch Range)
        • Big Cottonwood Mining District
          • Brighton
UGMS Bull 117 Minerals and Mineral Localities of Utah
UGMS Bull 117 Minerals and Mineral Localities of Utah
  • Virginia
    • Amelia Co.
      • Winterham
Rocks & Minerals 79:4 p 256
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