Rocks that crystallized deep within the earth over long periods of time would most likely have: a. coarse-grained texture b. fine-grained texture c. glassy texture d. porphyritic texture the formulas naalsi_3o_8 and casl_2si_2o_8 represent: a. two separate minerals b. two minerals that have related physical properties c. two nonrelated minerals d. two end members of a solid solution series lava flows constitute the most severe type of hazard at which of the following volcanoes? mount st. helens mauna loa sunset crater m fuji hot spring deposits composed of travertine fall into the: a. sulfate mineral group b. silicate mineral group c. oxide mineral group d. carbonate mineral group which of the following sedimentary environments would produce the more well-sorted sedimentary rocks? a. dune b. river c. lacustrine d. glacial the most important factor in the deposition of evaporate minerals in a marine basin is: a. warm climate b. low precipitation c.