glass  search
USEglasses
glass materials  search
UFglass sand
RTsilica
 materials
 sands
 amorphous materials
 ceramic materials
 insulation materials
 tektites
 vitrification
SNMay also be used for natural glasses which are not igneous rocks. May be used as a commodity term with sands. Added to Thesaurus in 1998.
Glass Mountains  search
RTBrewster County Texas
 Pecos County Texas
SNBrewster and Pecos counties in W Texas. Indexed with counties or region as applicable.
glass sand  search
USEglass materials
glass, hydration of  search
USEhydration of glass
glass, volcanic  search
USEvolcanic glass
Glasscock County Texas  search
BTUnited States
 .Texas
 ..Glasscock County Texas
glasses  search
BTigneous rocks
 .volcanic rocks
 ..glasses
NTobsidian
 palagonite
 perlite
 pitchstone
 volcanic glass
 zirkelite
UFglass
RTpyroclastics
 amorphous materials
 tektites
 Darwin glass
 devitrification
 vitrification
 maskelynite
 palagonitization
SNUse volcanic glass if applicable. Glass materials may be used for natural, nonvolcanic materials. Before 1981, search pyroclastics and glasses.
glassy feldspar  search
USEsanidine