Lakargiite (original) (raw)

A valid IMA mineral species

About LakargiiteHide

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Colour:

Red-brown to yellowish and almost colorless.

Lustre:

Adamantine, Vitreous, Sub-Metallic

Specific Gravity:

4.587 (Calculated)

Crystal System:

Orthorhombic

Name:

Named for the Lakargi Mountain, Russia, the type locality.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:31993:1

771ed078-11b7-4da5-acf0-9c56c70d0ff1

IMA Classification of LakargiiteHide

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Type description reference:

Galuskin, E. V., Gazeev, V. M., Armbruster, T., Zadov, A. E., Galuskina, I. O., Pertsev, N. N., Dzierżanowski, P., Kadiyski, M., Gurbanov, A. G., Wrzalik, R., Winiarski, A. (2008) Lakargiite CaZrO3: A new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia. American Mineralogist, 93 (11) 1903-1910 doi:10.2138/am.2008.2900

Classification of LakargiiteHide

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4.CC.30

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

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of LakargiiteHide

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Adamantine, Vitreous, Sub-Metallic

Colour:

Red-brown to yellowish and almost colorless.

Comment:

Red-brown (high Ti contents)

Streak:

Light-brown to cream-white

Hardness:

VHN100= 1545 kg/mm2 - Vickers

Cleavage:

Distinct/Good
{110} and {001}

Fracture:

Irregular/Uneven

Density:

4.587 g/cm3 (Calculated)

Optical Data of LakargiiteHide

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RI values:

_n_α = 2.100 _n_β = 2.100 _n_γ = 2.100

Birefringence:

less than 0.003–0.005

δ = 0.000

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Colour in reflected light:

light-brown to colorless

Internal Reflections:

red-brown and pink internal reflections

Pleochroism:

Non-pleochroic

Chemistry of LakargiiteHide

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Mindat Formula:

Ca(Zr,Sn,Ti)O3

Crystallography of LakargiiteHide

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Crystal System:

Orthorhombic

Class (H-M):

m m m _(_2/_m_2/_m_2/m ) - Dipyramidal

Cell Parameters:

a = 5.556(1) Å, b = 5.715(1) Å, c = 7.960(1) Å

Ratio:

a:b:c = 0.972 : 1 : 1.393

Unit Cell V:

252.75 ų (Calculated from Unit Cell)

Twinning:

Forms twins according to the following twin laws: 90° rotation around [101] and 180° rotation around [101]

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of LakargiiteHide

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General Appearance of Type Material:

pseudo-cubic crystals up to 30–35 µm in size and aggregates up to 200 µm.

Place of Conservation of Type Material:

Specimen (number 3590/1) is deposited at the Fersman Mineralogical Museum in Moscow.

Geological Setting of Type Material:

Accessory mineral in high-temperature skarns in carbonate-silicate rocks occurring as xenoliths in ignimbrites

Associated Minerals at Type Locality:

Reference:

Galuskin, E.V., Gazeev, V.M., Armbruster, Th., Zadov, A., Galuskina, I.O., Pertsev, N.N., Dziercanowski, P., Kadiyski, M., Gurbanov, A., Wrzalik, R., Winiarski, A. (2008) Lakargiite CaZrO3 - a new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia. American Mineralogist: 93: 1903-1910.

Synonyms of LakargiiteHide

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Relationship of Lakargiite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Health Risks:

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

Internet Links for LakargiiteHide

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References for LakargiiteHide

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Reference List:

Galuskin, E. V., Gazeev, V. M., Armbruster, T., Zadov, A. E., Galuskina, I. O., Pertsev, N. N., Dzierżanowski, P., Kadiyski, M., Gurbanov, A. G., Wrzalik, R., Winiarski, A. (2008) Lakargiite CaZrO3: A new mineral of the perovskite group from the North Caucasus, Kabardino-Balkaria, Russia. American Mineralogist, 93 (11) 1903-1910 doi:10.2138/am.2008.2900

Localities for LakargiiteHide

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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

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.