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Mathiasite

Formula:
K(Ti,Cr,Fe,Mg,Zr)
 
21
O
 
38
System:TrigonalHardness:7½
This page provides mineralogical data about Mathiasite.

Classification of Mathiasite

IMA status:Approved
Strunz 8th edition ID:4/C.09-20
Nickel-Strunz 10th (pending) edition ID:4.CC.40

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations
Dana 8th edition ID:8.5.1.7

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
5 : AB21O38
Hey's CIM Ref.:7.14.6

7 : Oxides and Hydroxides
14 : Oxides of Cr
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Type Occurrence of Mathiasite

Co-type Localities:Jagersfontein Mine, Jagersfontein, Free State Province, South Africa
Bultfontein Mine, Bultfontein, Kimberley, Northern Cape Province, South Africa
Kolonkwanen kimberlite prospect, Mackenzie's Post District, Northern Cape Province, South Africa
Year of Discovery:1983

Physical Properties of Mathiasite

Hardness (Mohs):7½

Crystallography of Mathiasite

Crystal System:Trigonal
Cell Parameters:a = 10.35Å, c = 20.58Å
Ratio:a:c = 1 : 1.988
Unit Cell Volume:V 1,909.22 ų (Calculated from Unit Cell)

Chemical Properties of Mathiasite

Formula:
K(Ti,Cr,Fe,Mg,Zr)
 
21
O
 
38
Essential elements:K, O, Ti
All elements listed in formula:Cr, Fe, K, Mg, O, Ti, Zr

Relationship of Mathiasite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.CC.05Chrombismite
Bi
 
16
CrO
 
27
4.CC.10Freudenbergite
Na
 
2
(Ti,Fe)
 
8
O
 
16
4.CC.15Grossite
CaAl
 
4
O
 
7
4.CC.20Mayenite
Ca
 
12
Al
 
14
O
 
33
4.CC.25Yafsoanite
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2
4.CC.30Latrappite
(Ca,Na)(Nb,Ti,Fe)O
 
3
4.CC.30Lueshite
NaNbO
 
3
4.CC.30Natroniobite
NaNbO
 
3
4.CC.30Perovskite
CaTiO
 
3
4.CC.30Barioperovskite
BaTiO
 
3
4.CC.30IMA2007-014
Ca(Zr,Sn,Ti)O
 
3
4.CC.35Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
4.CC.35Macedonite
PbTiO
 
3
4.CC.35Tausonite
SrTiO
 
3
4.CC.35Isolueshite
(Na,La,Ca)(Nb,Ti)O
 
3
4.CC.40Crichtonite
(Sr,La,Ce,Y)(Ti,Fe
3+
 
,Mn)
 
21
O
 
38
4.CC.40Davidite-(Ce)
(Ce,La)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
4.CC.40Davidite-(La)
(La,Ce)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
4.CC.40Davidite-(Y)
(Y,Ce,La,Ca,□)(U,Y)(Fe
3+
 
,Mg)
 
2
(Ti,Fe
3+
 
,Cr,�)
 
18
O
 
38
4.CC.40Landauite
NaMnZn
 
2
(Ti,Fe)
 
6
Ti
 
12
O
 
38
4.CC.40Lindsleyite
(Ba,Sr)(Ti,Zr,Fe,Cr)
 
21
O
 
38
4.CC.40Loveringite
(Ca,Ce)(Ti,Fe,Cr,Mg)
 
21
O
 
38
4.CC.40Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38
4.CC.40Dessauite-(Y)
(Sr,Pb)(Y,U)(Ti,Fe
3+
 
)
 
20
O
 
38
4.CC.40Cleusonite
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
4.CC.40Gramaccioliite-(Y)
(Pb,Sr)(Y,Mn)(Ti,Fe
3+
 
)
 
18
Fe
3+
2
O
 
38
4.CC.45Diaoyudaoite
NaAl
 
11
O
 
17
4.CC.45Hawthorneite
BaMgTi
 
3
Cr
 
4
Fe
 
4
O
 
19
4.CC.45Hibonite
(Ca,Ce)(Al,Fe,Ti,Si,Mg)
 
12
O
 
19
4.CC.45Lindqvistite
Pb
 
2
(Mg,Fe)Fe
 
16
O
 
27
4.CC.45Magnetoplumbite
(Pb,Mn)(Fe,Mn)
 
12
O
 
19
4.CC.45Plumboferrite
PbFe
 
4
O
 
7
4.CC.45Yimengite
K(Cr,Ti,Fe,Mg)
 
12
O
 
19
4.CC.45Haggertyite
Ba[Fe
2+
6
Ti
 
5
Mg]O
 
19
4.CC.45Nežilovite
PbZn
 
2
(Mn
4+
 
,Ti
4+
 
)
 
2
Fe
3+
8
O
 
19
4.CC.45Batiferrite
Ba[Ti
 
2
Fe
3+
8
Fe
2+
2
]O
 
19
4.CC.50Jeppeite
(K,Ba)
 
2
(Ti,Fe)
 
6
O
 
13
4.CC.55Zenzénite
Pb
 
3
(Fe,Mn)
 
4
Mn
 
3
O
 
13
4.CC.60Mengxianminite
(Ca,Na)
 
3
(Fe,Mn)
 
2
Mg
 
2
(Sn,Zn)
 
5
Al
 
8
O
 
29
Related Minerals - Hey's Index Grouping:

- +
7.14.1Eskolaite
Cr
 
2
O
 
3
7.14.2Bracewellite
CrO(OH)
7.14.3Grimaldiite
CrO(OH)
7.14.4Guyanaite
CrO(OH)
7.14.5Yimengite
K(Cr,Ti,Fe,Mg)
 
12
O
 
19
7.14.7Mcconnellite
CuCrO
 
2
7.14.8Redledgeite
Ba
 
x
([Cr,Fe,V]
3+
2x
Ti
 
8-2x
)O
 
16
7.14.9Hawthorneite
BaMgTi
 
3
Cr
 
4
Fe
 
4
O
 
19
7.14.10Zincochromite
ZnCr
 
2
O
 
4
7.14.11Wattersite
(Hg-Hg)
2+
2
Hg
2+
 
[O
 
2
|CrO
 
4
]
7.14.12Chromite
FeCr
 
2
O
 
4
7.14.13Magnesiochromite
MgCr
 
2
O
 
4
7.14.14 Donathite

Other Names for Mathiasite

Synonyms:
IMA1982-087
Other Languages:
German:Mathiasit
Russian:Матиасит
Spanish:Mathiasita

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 Mathiasite

Reference List:American Mineralogist (1983): 68: 494-505.

Contributions to Mineralogy and Petrology: 117: 164-174.

Articles/Blogs about Mathiasite

Internet Links for Mathiasite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    Localities for Mathiasite

    (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.
    South Africa
     
    • Free State Province
      • Jagersfontein
    		S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)
    • Northern Cape Province
      • Kimberley
        • Bultfontein
    		S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)
    S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)
      • Mackenzie's Post District
    		S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)
    Mineral and/or Locality
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