| 摘要 |
An LAS-type float glass, which is substantially free of As2O3 and/or Sb2O3 and precipitates a &bgr;-quartz solid solution or a &bgr;-spodumene solid solution as a main crystal by heat treatment, wherein, when C1 [mass %] represents the content of SnO2 at a glass surface, C0 [mass %] represents the content of SnO2 at a depth of 0.5 mm from the glass surface, and k [mass %/mm] represents an SnO2 concentration gradient defined by k=(C1-C0)/0.5, the LAS-type crystallized glass satisfies relationships of K≦̸2 and C0≦̸0.8 with respect to at least one surface thereof.
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