Assertion: aragonite | /r/CapableOf | change to calcite
Facets:
value: at 470°c
type: TEMPORAL
value: over timescales of days or less
type: TEMPORAL
value: at vaterite
type: LOCATION
value: at temperatures
type: TEMPORAL
Source sentences:
text: If heated under intense heat (725 degrees) it will change to Calcite.
text: Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable.
text: Calcite represents the stable form of calcium carbonate; aragonite will change to calcite at 470°C, and vaterite, or μ-CaCO3, is less stable still.
text: "By drawing water through a static magnetic field ... it has been shown that the initial amount of aragonite formed is significantly increased over calcite in samples with and without the presence of dissolved iron, although this aragonite eventually changes to calcite.