Rhyolite.
Basalt is an igneous rock with low silica content that flows easily due to its fluid nature when erupted. It is commonly found in volcanic areas and is dark in color.
volcanic rocks
Hmm well not really anonther name as such. if the sand is particulary high in a minerla you could name it thus. In the case of a high silica sand i'd be inclined to call it a quartz sand.
There is no scientific name per se for a rice hull.However, according to Wikipedia:"To protect the seed during the growing season, the hull is made of hard materials, including opaline silica and lignin.... The very high content in amorphous silica of the hulls confer to them and to their ash (SiO2 ~ 20 wt.%) after combustion very valuable properties."
Lava is melted rock. Other names for lava include a'a' or pahoehoe.
The common name for members of the Sphenophyta is horsetails. These plants are characterized by their jointed stems and whorled leaves, and they are often found in damp environments. Horsetails are ancient plants that have existed since the time of the dinosaurs and are known for their high silica content, which makes them somewhat abrasive.
Virtua Girl Silica is a virtual character and does not have a real name, as she is a digital creation rather than a real person. She is part of the Virtua Girl brand, which features animated adult content. The character was designed to appeal to fans of virtual reality and adult entertainment.
Silicon dioxide is silica, SiO2.
You might mean either silica or quartz. Please see the link.
The scientific name for sand is usually referred to as "silica" or "silicon dioxide."
Salton Sea in southern California
VOLCANIC ASH, VOLCANIC CINDERS, VOLCANIC BLOCKS & VOLCANIC BOMBS.