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Arsenatrotitanite

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About ArsenatrotitaniteHide

Formula:
NaTi(AsO4)O
Colour:
brownish red, pale pinkish-reddish, almost colourless
Lustre:
Vitreous
Hardness:
Specific Gravity:
3.950 (Calculated)
Crystal System:
Monoclinic
Name:
For being the Na and As analogue of titanite
Tilasite-durangite group. The chemistry is not unique - see braithwaiteite.


Classification of ArsenatrotitaniteHide

Approved
Approval Year:
2016
First Published:
2019

Physical Properties of ArsenatrotitaniteHide

Vitreous
Transparency:
Transparent
Colour:
brownish red, pale pinkish-reddish, almost colourless
Streak:
White
Hardness:
5½ on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Perfect
On {110}
Fracture:
Step-Like
Density:
3.950 g/cm3 (Calculated)

Optical Data of ArsenatrotitaniteHide

Type:
Biaxial (+)
RI values:
nα = 1.825(5) nβ = 1.847(6) nγ = 1.896(6)
2V:
Measured: 70° (5), Calculated: 69°
Max Birefringence:
δ = 0.071
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong, r> v
Pleochroism:
Strong
Comments:
Z (bright pink to, in thicker grains, carmin red) > Y(very pale pinkish to almost colourless) ≥ X(colourless)
Comments:
Y = b

Chemical Properties of ArsenatrotitaniteHide

Formula:
NaTi(AsO4)O

Crystallography of ArsenatrotitaniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 6.6979(3) Å, b = 8.7630(3) Å, c = 7.1976(3) Å
β = 114.805(5)°
Ratio:
a:b:c = 0.764 : 1 : 0.821
Unit Cell V:
383.48 ų
Z:
4
Morphology:
Prismatic, tabular or lamellar, wedge-shaped

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.845Å(89)
3.631Å(36)
3.431Å(48)
3.300Å(100)
3.036Å(100)
2.655Å(25)
2.627Å(91)
2.615Å(57)

Type Occurrence of ArsenatrotitaniteHide

General Appearance of Type Material:
Prismatic, tabular, lamellar or acicular crystals up to 0.3×0.8×2 mm. They are separated or combined in open-work aggregates up to 2 mm across or interrupted crusts up to 2x5 mm2 in area and up to 0.3 mm thick.
Place of Conservation of Type Material:
Collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia (registration number 4852/1)
Geological Setting of Type Material:
Fumarole
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F., Yapaskurt, V.O., Sidorov, R.G., Britvin, S.N., Pushcharovsky, D.Y. (2019) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IX. Arsenatrotitanite, NaTiO(AsO4). Mineralogical Magazine: 83(3): 453-458.

Synonyms of ArsenatrotitaniteHide

Relationship of Arsenatrotitanite to other SpeciesHide

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 ArsenatrotitaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F., Yapaskurt, V.O., Sidorov, R.G., Britvin, S.N., Pushcharovsky, D.Y. (2016): Arsenatrotitanite, IMA 2016-015. CNMNC Newsletter No. 33, October 2016, page 1143; Mineralogical Magazine: 80: 1135–1144
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F., Yapaskurt, V.O., Sidorov, R.G., Britvin, S.N., Pushcharovsky, D.Y. (2019) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IX. Arsenatrotitanite, NaTiO(AsO4). Mineralogical Magazine: 83(3): 453-458.

Internet Links for ArsenatrotitaniteHide

Localities for ArsenatrotitaniteHide

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.
Russia (TL)
 
  • Kamchatka Krai
    • Tolbachik volcano
      • Great Fissure eruption (Main Fracture)
        • Northern Breakthrough (North Breach)
          • Second scoria cone
Pekov, I.V., Zubkova, N.V., Agakhanov, A.A., Belakovskiy, D.I., Vigasina, M.F., Yapaskurt, V.O., Sidorov, R.G., Britvin, S.N., Pushcharovsky, D.Y. (2019) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. IX. Arsenatrotitanite, NaTiO(AsO4). Mineralogical Magazine: 83(3): 453-458.
 
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