Assertion: boron | /r/HasProperty | combined as borax
Facets:
value: naturally
type: MANNER
Source sentences:
text: Boron occurs combined as borax, kernite, and tincalconite (hydrated sodium borates), the major commercial boron minerals, especially concentrated in the arid regions of California, and as widely dispersed minerals such as colemanite, ulexite, and tourmaline.
text: It is found naturally combined in compounds such as borax and boric acid (sometimes found in volcanic spring waters).