pure+silica
31Magic sand — Magic sand, Moon Sand, Mars Sand, Space Sand,Sqand or Aqua Sand is a toy made from sand coated with a hydrophobic compound. The presence of this hydrophobic compound causes the grains of sand to adhere to one another and form cylinders (to… …
32Panavally — is a serene village in India that is part of Cherthala taluk and Alappuzha district in kerala state .It is at the north frontier of old Travancore state. Different branches of the backwaters of Vembanad surround the village. Geographically, this… …
33nodule — /noj oohl/, n. 1. a small node, knot, or knob. 2. a small, rounded mass or lump. 3. Bot. a tubercle. [1590 1600; < L nodulus a little knot, equiv. to nod(us) NODE + ulus ULE] * * * In geology, a rounded mineral concretion that is distinct from,… …
34mohs' scale — ˈmōz , ōs(ə̇z) noun Usage: usually capitalized M Etymology: after Friedrich Mohs died 1839 German mineralogist 1. : a scale of hardness for minerals ranging from 1 for the softest to 10 for the hardest in which 1 represents the hardness of talc;… …
35Fraser Island — Infobox Islands name = Fraser Island image caption = View from Indian Head, Fraser Island locator native name = native name link = location = Australia coordinates= coord|25|13|S|153|08|E|display=inline,title area = 1,840 km sup2; highest mount …
36scale — 1. A standardized test for measuring psychological, personality, or behavioral characteristics. SEE ALSO: score, test. 2. SYN: squama. 3. A small thin plate of horny epithelium, resembling a fish s., cast off from the skin …
37flint — n. 1 a a hard grey stone of nearly pure silica occurring naturally as nodules or bands in chalk. b a piece of this esp. as flaked or ground to form a primitive tool or weapon. 2 a piece of hard alloy of rare earth metals used to give an igniting… …
38Flint — n. 1 a a hard grey stone of nearly pure silica occurring naturally as nodules or bands in chalk. b a piece of this esp. as flaked or ground to form a primitive tool or weapon. 2 a piece of hard alloy of rare earth metals used to give an igniting… …
39Tabasheer — Tab a*sheer , n. [Per. tab[=a]sh[=i]r: cf. Skr. tvakksh[=i]r[=a], tvaksh[=i]r[=a].] A concretion in the joints of the bamboo, which consists largely or chiefly of pure silica. It is highly valued in the East Indies as a medicine for the cure of… …
40Tridymite — Trid y*mite, n. [Gr. ? threefold. So called in allusion to the supposed threefold nature of the twin crystals.] (Min.) Pure silica, like quartz, but crystallizing in hexagonal tables. It is found in trachyte and similar rocks. [1913 Webster] …
