and hardness to the amphiboles but have slightly higher densities owing to the absence of hydroxyls. Pyroxenes have two distinctive planes of cleavage with intersecting angles of about 87° and 93°. Perpendicular to their cleavage planes, pyroxenes have nearly square cross sections, which, togethe...
They are similar in colour, lustre, and hardness to the amphiboles but have slightly higher densities owing to the absence of hydroxyls. Pyroxenes have two distinctive planes of cleavage with intersecting angles of about 87° and 93°. Perpendicular to their cleavage planes, pyroxenes have ...
HardnessAntibacterial activityTransparent glass was prepared from nominal alkali pyroxene (Na 2 MgSi 2 O 6 ) composition. The results showed that the incorporation of Cr 2 O 3 in alkali pyroxene composition with 0.5 and 1.0 wt% increased the crystallization temperature of high cristobalite. High ...
They are similar in colour, lustre, and hardness to the amphiboles but have slightly higher densities owing to the absence of hydroxyls. Pyroxenes have two distinctive planes of cleavage with intersecting angles of about 87° and 93°. Perpendicular to their cleavage planes, pyroxenes have ...
They are similar in colour, lustre, and hardness to the amphiboles but have slightly higher densities owing to the absence of hydroxyls. Pyroxenes have two distinctive planes of cleavage with intersecting angles of about 87° and 93°. Perpendicular to their cleavage planes, pyroxenes have ...
(mutton-fat jade), jade’s other form, by itsgranularfractureand glassy lustre; in addition, polished surfaces often show pitting caused by varying hardness. Jadeite,sodiumaluminum silicate (NaAlSi2O6), may contain a number of impurities (often calcium) that give it a variety of colours: ...
They are similar in colour, lustre, and hardness to the amphiboles but have slightly higher densities owing to the absence of hydroxyls. Pyroxenes have two distinctive planes of cleavage with intersecting angles of about 87° and 93°. Perpendicular to their cleavage planes, pyroxenes have ...
Fast fired under industrial conditions glass-ceramic glazes on to porcelain stoneware supports improved hardness of final productsdoi:10.1016/j.jeurceramsoc.2004.01.025Francisco Jose TorresJavier AlarcónElsevier LtdJournal of the European Ceramic Society...
CrystallizationCorrosionHardnessThe crystallization characteristics, crystalline phase assemblages and solid solution phases developed due to thermally crystallized glasses based on the Li2SiO3–Li2Si2O5–LiCrSi2O6 (1028 ± 3 °C) eutectic glass system by replacing some trivalent oxides instead of...