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Marshall Sussmann
Light pink to deep pink, orange-pink
Vitreous, Sub-Vitreous
Crystal System:
Named in 2013 in honor of Marshall Sussman, USA mineral collector who specializes in South African and Namibian minerals.
An ordered (CaMn) intermediate member of the Pectolite-Sérandite Series.

The first specimens were thought to be bustamite.
Some "schizolite" is in fact marshallsussmanite.

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Classification of MarshallsussmaniteHide

Approval Year:

Physical Properties of MarshallsussmaniteHide

Vitreous, Sub-Vitreous
Transparent, Translucent
Light pink to deep pink, orange-pink

Chemical Properties of MarshallsussmaniteHide


Crystallography of MarshallsussmaniteHide

Crystal System:
Class (H-M):
1 - Pinacoidal
Space Group:
Cell Parameters:
a = 7.7834(4) Å, b = 6.9373(4) Å, c = 6.8496(3) Å
α = 90.680(3)°, β = 94.329(3)°, γ = 102.854(3)°
a:b:c = 1.122 : 1 : 0.987
Unit Cell V:
359.40 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

Type Occurrence of MarshallsussmaniteHide

General Appearance of Type Material:
Pink blocky to somewhat bladed crystals.
Geological Setting of Type Material:
Manganese ore deposit
Associated Minerals at Type Locality:

Synonyms of MarshallsussmaniteHide

Relationship of Marshallsussmanite to other SpeciesHide

Other Members of this group:
Barrydawsonite-(Y)Na1.5Y0.5CaSi3O9HMon. 2/m : P21/b
BustamiteCaMn2+(Si2O6)Tric. 1 : P1
MurakamiiteCa2LiSi3O8(OH)Tric. 1 : P1
PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
TanohataiteLiMn2(HSi3O9)Tric. 1 : P1
VistepiteSnMn4B2Si4O16(OH)2Tric. 1
WollastoniteCaSiO3Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
Aegirine12 photos of Marshallsussmanite associated with Aegirine on mindat.org.
Hydroxyapophyllite-(K)3 photos of Marshallsussmanite associated with Hydroxyapophyllite-(K) on mindat.org.
Calcite2 photos of Marshallsussmanite associated with Calcite on mindat.org.

Other InformationHide

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 MarshallsussmaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Origlieri, M.J., Downs, R.T and Yang, H. (2013) Marshallsussmanite, IMA 2013-067. CNMNC Newsletter No. 18,December 2013, page 3256; Mineralogical Magazine, 77, 3249-3258.
Pohwat, P.W. (2014): Connoisseur's Choice: Marshallsussmanite, Wessels mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Rocks & Minerals, 89(3), 258-260.

Internet Links for MarshallsussmaniteHide

Localities for MarshallsussmaniteHide

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.
  • Queensland
    • Somerset Region
Carr, G.R., Phillips, E.R. & Williams, P.R. (1976): An occurrence of eudialyte and manganoan pectolite in a phonolite dyke from south-eastern Queensland. Mineralogical Magazine 40, 853-856. [as "manganoan pectolite"]
  • Kujalleq
    • Narsaq
      • Ilímaussaq complex
Ohashi, Y. & Finger, L. W. (1978): The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite, wollastonite, and the pectolite-schizolite-serandite series. American Mineralogist 63, 274-288. [as "schizolite"]
  • Khomas Region
    • Windhoek District
      • Aris
Blaß, G., Kolitsch, U., Tremmel, G., Esche, J. (2016): Neue Mineralienfunde aus den Phonolithbrüchen von Aris in Namibia. Mineralien-Welt 27 (4), 48-60 (in German); Kolitsch, U., Blaß, G., Jahn, S., Cámara, F., von Bezing, L., Wartha, R. R., Tremmel, G., Sturla, M., Cerea, P., Skebo, M. and Ciriotti, M. E. (2016): Aris - mineralogy of the famous alkaline phonolite. AMI - Associazione Micromineralogica Italiana, Cremona, Italy, 95 pp.
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
Dmitriy lLisitsin analysis.
South Africa (TL)
  • Northern Cape Province
    • Kalahari manganese field
      • Hotazel
Cairncross, B., and Beukes, N. J., (2013) The Kalahari Manganese Field, the adventure continues. Struik Nature Publishers, Cape Town, South Africa; Origlieri, M.J., Downs, R.T and Yang, H. (2013) Marshallsussmanite, IMA 2013-067. CNMNC Newsletter No. 18,December 2013, page 3256; Mineralogical Magazine, 77, 3249-3258
      • Kuruman
        • N'Chwaning Mines
Cairncross, B. and Beukes, N. J., (2013) The Kalahari Manganese Field, the adventure continues. Struik Nature Publishers, Cape Town, South Africa.
Mineral and/or Locality  
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