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在高温下用 x 射线单晶和光学方法采用水热合成的单斜变体的晶体检查了鳞石英的热变化。通过加热和冷却确定了五个相。它们是 MC、OP、OS、OC 和 HP 相,其温度范围分别为从室温到110℃,110—150℃,150—190℃,190—380℃和380℃以上,MC,单斜 Cc.α=18.49.b=4.991,c=25.83.β=117.75°;OP.斜方 P2_12_12_1。α=26.65,b=5.02,c=8.15;OS,测量上具有非整数超级结构的斜方晶体,α=从65变到95.b=5.02,c=8.18;OC,斜方 C222_1.α=8.73.b=5.02,c=8.28,HP,六方 P63/mmc.α=5.05.c=8.28.
Crystals of monoclinic variants hydrothermally synthesized at high temperature were examined for x-ray single crystal and optical methods for the thermal changes of tridymite. Five phases are defined by heating and cooling. They are MC, OP, OS, OC and HP phases with temperatures ranging from room temperature to 110 ° C, 110-150 ° C, 150-190 ° C, 190-380 ° C and 380 ° C, respectively, MC, monoclinic Cc.α = 18.49.b = 4.991, c = 25.83.β = 117.75 °; OP. Oblique P2_12_12_1. α = 26.65, b = 5.02, c = 8.15; OS, orthorhombic orthorhombic orthorhombic structure measured on α = 65 to 95.b = 5.02, c = 8.18; OC, rhombus C222_1.α = 8.73.b = 5.02, c = 8.28, HP, hexagonal P63 / mmc.α = 5.05.c = 8.28.