powder specific gravity
51Azurite — may also refer to a blue Green fluorescent protein derivative. For the DFPSO vessel, see Azurite DFPSO. Azurite Azurite from China with large crystals and light surface weathering. General …
52Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …
53calcium — /kal see euhm/, n. Chem., Biol. a silver white divalent metal, occurring combined in limestone, chalk, gypsum, etc., occurring also in vertebrates and other animals, as a component of bone, skeletal mass, shell, etc., and as a necessary element… …
54iron — ironless, adj. ironlike, adj. /uy euhrn/, n. 1. Chem. a ductile, malleable, silver white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon containing forms for making tools, implements, machinery,… …
55aluminum processing — Introduction preparation of the ore for use in various products. Aluminum, or aluminium (Al), is a silvery white metal with a melting point of 660° C (1,220° F) and a density of 2.7 grams per cubic centimetre. The most abundant… …
56aluminum — A white silvery metal of very light weight; atomic no. 13, atomic wt. 26.981539. Many salts and compounds are used in medicine and dentistry. [L. alumen, alum] a. acetate used as a disinfectant by embalmers; proposed as …
57Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
58concentration — 1. A preparation made by extracting a crude drug, precipitating from the solution, and drying. 2. Increasing the amount of solute in a given volume of solution by evaporation of the solvent. 3. The quantity of a substance per unit …
59Amorphous sulphur — Sulphur Sul phur, n. [L., better sulfur: cf. F. soufre.] 1. (Chem.) A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast… …
60Colias philodice — Sulphur Sul phur, n. [L., better sulfur: cf. F. soufre.] 1. (Chem.) A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast… …
