Vanadio-pargasite (original) (raw)

General Appearance of Type Material:

subhedral long- and short-prismatic crystals 0.10–0.8 × 0.05–0.10 mm in size

Place of Conservation of Type Material:

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, catalogue numbers 5035/1, 5035/2 and 5035/3

Empirical Formula of Type Material:

(K0.07Na0.90)(Na0.05Ca1.91Mg0.04)Σ2.00(Mg4.02Cr0.05V0.68Al0.23Ti0.02)Σ5.00(Si6.09Al1.91)Σ8.00O22(OH1.67F0.33)Σ2.00

Geological Setting of Type Material:

The host rocks (marble) are Cr–V-bearing calcite-dolomite with siliceous sediments, metamorphosed in granulite facies and partly diaphtorised in amphibolite facies.

Associated Minerals at Type Locality:

Reference:

Cametti, G., Armbruster, T., Reznitsky, L.Z., Sklyarov, E.V., Della Ventura, G. (2018): Crystal structure and crystal-chemistry of vanadio-pargasite: a new amphibole from southern Lake Baikal, Siberia, Russia. European Journal of Mineralogy, 30: 981-987.

Thermal Behaviour:

In a thermogram over the range 654–1081°С, H2O is released with a endothermic effect. Over the range 900–1183°C, the main endothermic effect is caused by water and, possibly, F release, as well as melting of the mineral (1020°C).

Health Risks:

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