A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand.
clastic rock composed of grains from 0.0625 to 2 mm in diameter, usually quartz, feldspar, and rock fragments, bound together by a cement of quartz, carbonate, or other minerals, or by a matrix of clay minerals.
A cemented or otherwise compacted detrital sediment composed predominantly of quartz sand grains.
Rock composed mainly of sand-sized particles or fragments of the mineral quartz.
Natural stone with porous, granular texture, usually very porous.
yellow stone used to build some mission churches
A soft to medium-hard stone used for walls, foundations and chimneys. The softer variety is used for interior veneer.