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Fire rock is manufactured lava rock that is sold in various shapes and sizes, and is used as a medium for retaining direct heat. Fire rocks are used in natural gas fireplaces or in natural gas or propane burning fire pits. It may be used as the main fuel distributor or as padding for fire glass to go on top.
The terms lava stone and lava rock are more used by marketers than geologists, who would likely say "volcanic rock" (because lava is a molten liquid and rock is solid). "Lava stone" may describe anything from a friable silicic pumice to solid mafic flow basalt, and is sometimes used to describe rocks that were never lava, but look as if they ...
Lava rock buildings and structures (24 P) A. Andesite formations (22 P) ... Pages in category "Volcanic rocks" The following 68 pages are in this category, out of 68 ...
Basalt (UK: / ˈ b æ s ɒ l t,-ɔː l t,-əl t /; [1] [2] US: / b ə ˈ s ɔː l t, ˈ b eɪ s ɔː l t /) [3] is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon.
Its striking colours and water-holding properties can make it attractive for landscaping and drainage works. [8] Scoria can be used for high-temperature insulation, as in gas barbecue grills. [9] The ancient Romans used cinders as construction aggregates, one of the earliest industrial uses of volcanic rocks. [7]
A variety of flora and fauna are found on Table Mountain. In the spring, many wildflowers can be found atop the mountain including several species of lupine and the yellow mariposa lily, Calochortus luteus. [9] Vernal pools form on the flat top after heavy winter and spring rains, providing habitat for many uncommon plant and animal species.
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