evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.
crystalization in molten earth: slow cooling over time. (hundreds to millions of years)
crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)
crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.
Another question on Mathematics
Mathematics, 21.06.2019 16:00
What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)
The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)