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Kassite

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Formula:
CaTi2O4(OH)2
System:
Orthorhombic
Hardness:
5
Name:
In honour of Academician Nikolai Grigor’evich Kassin (1885–1949), the geologist who discovered the Afrikanda massif, Russia.
This page provides mineralogical data about Kassite.

Classification of Kassite

Approved
4.DH.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
8.3.9.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
7.9.7

7 : Oxides and Hydroxides
9 : Oxides of Ti
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First Recorded Occurrence of Kassite

Year of Discovery:
1965

Physical Properties of Kassite

Hardness (Mohs):
5

Crystallography of Kassite

Crystal System:
Orthorhombic
Cell Parameters:
a = 12.1Å, b = 31.65Å, c = 4.95Å
Ratio:
a:b:c = 0.382 : 1 : 0.156
Unit Cell Volume:
V 1,895.68 ų (Calculated from Unit Cell)

Optical Data of Kassite

Type:
Biaxial (-)
RI values:
nα = 1.950 nβ = 2.130 nγ = 2.210
2V:
Measured: 58° , Calculated: 62°
Max Birefringence:
δ = 0.260
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
very strong

Chemical Properties of Kassite

Formula:
CaTi2O4(OH)2
Essential elements:
All elements listed in formula:

Relationship of Kassite to other Species

7.9.1HongquiiteTiO
7.9.2RutileTiO2
7.9.3AnataseTiO2
7.9.4BrookiteTiO2
7.9.5GeikieliteMgTiO3
7.9.6PerovskiteCaTiO3
7.9.8TausoniteSrTiO3
7.9.9Crichtonite(Sr,La,Ce,Y)(Ti,Fe3+,Mn)21O38
7.9.10Lucasite-(Ce)CeTi2(O,OH)6
7.9.11Hibonite(Ca,Ce)Al12O19
7.9.12Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
7.9.13PyrophaniteMn2+TiO3
7.9.14IwakiiteMn2+Fe23+O4
7.9.15IlmeniteFe2+TiO3
7.9.16PseudobrookiteFe2TiO5
7.9.17UlvöspinelFe2TiO4
7.9.18PseudorutileFe2Ti3O9
7.9.19FreudenbergiteNa2(Ti,Fe)8O16
7.9.20KennedyiteMgFe23+Ti3O10
7.9.21Armalcolite(Mg,Fe2+)Ti2O5
7.9.22Högbomite(Mg,Fe)2(Al,Ti)5O10
7.9.23Qandilite(Mg,Fe)2(Ti,Fe,Al)O4
7.9.24Cafetite(Ca,Mg)(Fe,Al)2Ti4O12 · 4H2O
7.9.25Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
7.9.26Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38
7.9.27PrideriteK(Ti74+Fe3+)O16
7.9.28Jeppeite(K,Ba)2(Ti,Fe)6O13
7.9.29AnkangiteBa(Ti,V3+,Cr)8O16
7.9.30Ecandrewsite(Zn,Fe2+,Mn2+)TiO3
7.9.31LandauiteNaMnZn2(Ti,Fe)6Ti12O38

Other Names for Kassite

Name in Other Languages:
German:Kassit
Russian:Кассит
Spanish:Kassita

Other Information

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 Kassite

Reference List:
American Mineralogist (1967): 559-560.

American Mineralogist (1991): 76: 283-287.

Grey I E, Mumme W G, Pekov I V, Pushcharovsky D Y (2003): The crystal structure of chromian kassite from the Saranovskoye deposit, Northern Urals, Russia.
American Mineralogist 88, 1331-1335.

Bortolozzi G., Boscardin M., Rocchetti I. and Bersani D. (2013): Cafetite e kassite della cava di Pilcante in Val d'Adige (Ala, Trento). Micro, 11 (1), 39-48.

Internet Links for Kassite

Localities for Kassite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
China
 
  • Henan Province
    • Pingdingshan Prefecture
      • Wugang Co.
Anthony, J.W. et al.: Handbook of Mineralogy
Italy
 
  • Trentino-Alto Adige (Trentino-Südtirol)
    • Trento Province
      • Lagarina Valley
        • Mt. Baldo
          • Ala
            • Pilcante
Bortolozzi G., Boscardin M., Rocchetti I. and Bersani D. (2013): Cafetite e kassite della cava di Pilcante in Val d'Adige (Ala, Trento). Micro, Vol 11, 1, pagg.39-48.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Afrikanda
[World of Stones 95:5-6, 64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Khibiny Massif
Lapis 1996(4), p. 20
Pavel M. Kartashov data
  • Urals Region
    • Middle Urals
      • Permskaya Oblast'
        • Gornozavodskii area
          • Saranovskaya Village (Sarany)
Am Min, 88, 1331–1335 (2003)
USA
 
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Rocks & Min.:63:109. Am Min 71 1045-1048
  • Montana
    • Meagher Co.
Chakhmouradian A.R. & Mitchell R.H. (2002) The mineralogy of Ba- and Zr-rich alkaline pegmatites from Gordon Butte, Crazy Mountains (Montana, USA): comparisons between potassic and sodic agpaitic pegmatites. Contrib. Mineral. Petrol., 143, 93-114.
  • Oregon
    • Josephine Co.
      • Josephine Creek District
Am Min 76:283-287
Mineral and/or Locality  
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