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Srilankite

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Formula:
ZrTi
 
2
O
 
6
System:OrthorhombicColour:Black
Hardness:6½
Name:Named after its discovery locality at Rakwana, Sabaragamuwa Province, Sri Lanka.


Samarskite Group.

Classification of Srilankite

IMA status:Approved 1982
Strunz 8th edition ID:4/D.15-20
Nickel-Strunz 10th (pending) edition ID:4.DB.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
B : With medium-sized cations; chains of edge-sharing octahedra
Dana 8th edition ID:4.4.13.2

4 : SIMPLE OXIDES
4 : AX2
Hey's CIM Ref.:7.10.4

7 : Oxides and Hydroxides
10 : Oxides of Zr and Th
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Type Occurrence of Srilankite

Type Locality:Rakwana, Ratnapura District, Sabaragamuwa Province, Sri Lanka
Year of Discovery:1983

Physical Properties of Srilankite

Lustre:Sub-Adamantine
Colour:Black
Hardness (Mohs):6½

Crystallography of Srilankite

Crystal System:Orthorhombic
Cell Parameters:a = 4.7Å, b = 5.55Å, c = 5.01Å
Ratio:a:b:c = 0.847 : 1 : 0.903
Unit Cell Volume:V 130.69 ų (Calculated from Unit Cell)

Chemical Properties of Srilankite

Formula:
ZrTi
 
2
O
 
6
Essential elements:O, Ti, Zr
All elements listed in formula:O, Ti, Zr

Relationship of Srilankite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DB.05Argutite
GeO
 
2
4.DB.05Cassiterite
SnO
 
2
4.DB.05Plattnerite
PbO
 
2
4.DB.05Pyrolusite
MnO
 
2
4.DB.05Rutile
TiO
 
2
4.DB.05Tripuhyite
Fe
3+
 
Sb
5+
 
O
 
4
4.DB.05Tugarinovite
MoO
 
2
4.DB.05Varlamoffite
(Sn,Fe)(O,OH)
 
2
4.DB.10Byströmite
MgSb
 
2
O
 
6
4.DB.10Tapiolite-(Fe)
(Fe,Mn)(Ta,Nb)
 
2
O
 
6
4.DB.10Tapiolite-(Mn)
(Mn,Fe)(Ta,Nb)
 
2
O
 
6
4.DB.10Ordoñezite
ZnSb
 
2
O
 
6
4.DB.15bAkhtenskite
ε-Mn
4+
 
O
 
2
4.DB.15cNsutite
(Mn
4+
 
,Mn
2+
 
)(O,OH)
 
2
4.DB.15aParamontroseite
V
4+
 
O
 
2
4.DB.15aRamsdellite
Mn
4+
 
O
 
2
4.DB.20Scrutinyite
alpha-PbO
 
2
4.DB.25Ishikawaite
U
4+
 
Fe
2+
 
Nb
 
2
O
 
8
4.DB.25Ixiolite
(Ta,Nb,Sn,Fe,Mn)
 
4
O
 
8
4.DB.25Samarskite-(Y)
(Y,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8
4.DB.25Yttrocolumbite-(Y)
Y(U
4+
 
,Fe
2+
 
)Nb
 
2
O
 
8
4.DB.25Calciosamarskite
(Ca,Fe
3+
 
,Y)
 
2
(Nb,Ta,Ti)
 
2
O
 
8
4.DB.25Samarskite-(Yb)
(Yb,Fe
3+
 
)
 
2
(Nb,Ta)
 
2
O
 
8
4.DB.30Ferberite
FeWO
 
4
4.DB.30Hübnerite
MnWO
 
4
4.DB.30Sanmartinite
(Zn,Fe)WO
 
4
4.DB.30Krasnoselskite
CoWO
 
4
4.DB.30Heftetjernite
ScTaO
 
4
4.DB.30Huanzalaite
MgWO
 
4
4.DB.35Columbite-(Fe)
FeNb
 
2
O
 
6
4.DB.35Tantalite-(Fe)
FeTa
 
2
O
 
6
4.DB.35Columbite-(Mn)
(Mn,Fe)(Nb,Ta)
 
2
O
 
6
4.DB.35Tantalite-(Mn)
MnTa
 
2
O
 
6
4.DB.35Columbite-(Mg)
(Mg,Fe,Mn)(Nb,Ta)
 
2
O
 
6
4.DB.35Qitianlingite
(Fe,Mn)
 
2
(Nb,Ta)
 
2
WO
 
10
4.DB.35Magnocolumbite
4.DB.35Tantalite-(Mg)
(Mg,Fe
2+
 
)(Ta,Nb)
 
2
O
 
6
4.DB.40Ferrowodginite
FeSnTa
 
2
O
 
8
4.DB.40Lithiotantite
Li(Ta,Nb)
 
3
O
 
8
4.DB.40Lithiowodginite
LiTa
 
3
O
 
8
4.DB.40Titanowodginite
MnTiTa
 
2
O
 
8
4.DB.40Wodginite
Mn(Sn,Ta)Ta
 
2
O
 
8
4.DB.40Ferrotitanowodginite
Fe
2+
 
TiTa
 
2
O
 
8
4.DB.40Wolframowodginite
Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)
 
2
O
 
8
4.DB.45Tivanite
V
3+
 
TiO
 
3
(OH)
4.DB.50Carmichaelite
(Ti,Cr,Fe)[O
 
2-x
(OH)
 
x
]
4.DB.55Alumotantite
AlTaO
 
4
4.DB.60Biehlite
((Sb,As)O)
 
2
[MoO
 
4
]
Related Minerals - Hey's Index Grouping:

- +
7.10.1Baddeleyite
ZrO
 
2
7.10.2Arkelite
ZrO
 
2
7.10.3Painite
CaZrAl
 
9
(BO
 
3
)O
 
15
7.10.5Zirconolite
CaZrTi
 
2
O
 
7
7.10.6Calzirtite
CaZr
 
3
TiO
 
9
7.10.7Tazheranite
(Zr,Ti,Ca)O
 
2-x
7.10.8Zirkelite
(Ti,Ca,Zr)O
 
2-x
7.10.9Uhligite
Ca
 
3
(Ti,Al,Zr)
 
9
O
 
20
 ?
7.10.10Thorianite
ThO
 
2

Other Names for Srilankite

Synonyms:
IMA1982-056
Other Languages:
German:Srilankit
Russian:Шриланкит
Spanish:Srilankita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Srilankite

Reference List:

- +
Neues Jahrbuch für Mineralogie, Monatshefte (1983): 151-157.

Zeitschrift für Kristallographie (1983): 164: 59-66.

American Mineralogist (1984): 69: 212.

Internet Links for Srilankite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Srilankite details from Handbook of Mineralogy (PDF)
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    • Localities for Srilankite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? 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.
    Indian Ocean
     
    • Southwest Indian Ridge
    		Am Min 89:5-6 pp 759-766
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		Mikhailova, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Ivanyuk, G.Y., Men’shikov, Y.P., and Pakhomovsky, Y.A. (2007): Geology of Ore Deposits 49(7), 590-598.
    Sri Lanka
     
    • Sabaragamuwa Province
      • Ratnapura District
    		Neues Jahrb.Min.,Mh.(1983) 151-157; Lapis 8(9), 17 (1983)
    USA
     
    • Arizona
      • Apache Co.
        • Navajo Indian Reservation
          • Monument Valley
            • Dinnehotso
    		Mineralogical Record: 32: 211; Wang,L., R.C. Rouse, E.J. Essene, D.R. Peacor, and Y. Zhang (2000) Carmichaelite, a new hydroxyl-bearing titanite from Garnet Ridge, Arizona. American Mineralogist: 85: 792-800. Grant, Raymond W., Richard A. Bideaux & Sidney A. Williams (2006), Minerals Added to the Arizona List 1995 to 2005: 8.
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