Assertion: phosphoric acid's effect | /r/CapableOf | increase the viscosity of the magma
Facets:
value: greatly
type: DEGREE
Source sentences:
text: The best recovery of purified phosphoric acid is obtained at the lowest crystallizing temperature, other factors being equal; however, at low temperatures the effect of the additional phosphoric acid crystallized, taken in conjunction with the normal effect of low temperature on liquid viscosity, can greatly increase the viscosity of the magma.