The thermal expansion coefficient (TEC) of
anorthite15 from 20 to 500 ◦C is ∼4.3 × 10−6 ◦C−1, while the
TEC for glasses12 of the compositions detected in bone china
from 20 to 350 ◦C were calculated to be 3–4.5 × 10−6 ◦C−1
and the approximate TEC of -TCP12 from 50 to 400 ◦C is
12 × 10−6 ◦C−1.