pumice lava stone

pumice lava stone:
The three different basalt types extracted in Tentchong area are commercialized and are valuable for the international market, but the Italian Basaltina type,Dark grey and Charcoaare the most popular at this time.The color of the upper flow of large vesicular basalt is dark grey and charcoal black, while the middle and lower flows are grey or light grey, very similar to the Italian Basaltina. only in few
quarry area, the brown to red volcanic rock can be found.
The vacuole size and shape vary also in the different layers, from fine to medium and coarse

vacuoles, of rounded to elliptical shape. The linear fine vacuolar basalt with feldspar dissemination,

close to the Basaltina type, is common.
pumice lava stone