native arsenic

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• Native elements — ▪ Table Native elements name colour lustre Mohs hardness specific gravity habit or form allemontite tin white; reddish gray metallic 3–4 5.8–6.2 kidneylike masses amalgam gold amalgam yellowish metallic 15.5 lumps or grains moschellandsbergite… …   Universalium

• Arsenic — (pronEng|ˈɑrsənɪk) is a chemical element that has the symbol As and atomic number of 33. Arsenic was first documented by Albertus Magnus in 1250cite book |last=Emsley |first=John |title=Nature s Building Blocks: An A Z Guide to the Elements |year …   Wikipedia

• Native element minerals — are those elements that occur in nature in uncombined form with a distinct mineral structure. The elemental class includes metals and intermetallic elements, semi metals and non metals. This group also includes natural alloys, phosphides,… …   Wikipedia

• Arsenic — Ar se*nic ([aum]r s[ e]*n[i^]k; 277), n. [L. arsenicum, Gr. arseniko n, arreniko n, yellow orpiment, perh. fr. arseniko s or better Attic arreniko s masculine, a rrhn male, on account of its strength, or fr. Per. zern[=i]kh: cf. F. arsenic.] 1.… …   The Collaborative International Dictionary of English

• arsenic — n. /ahr seuh nik, ahrs nik/; adj. /ahr sen ik/, n. 1. a grayish white element having a metallic luster, vaporizing when heated, and forming poisonous compounds. Symbol: As; at. wt.: 74.92; at. no.: 33. 2. See arsenic trioxide. 3. a mineral, the… …   Universalium

• native element — Any of the 19 chemical elements that occur as minerals and are found in nature uncombined with other elements. They are commonly divided into three groups: metals (platinum, iridium, osmium, iron, zinc, tin, gold, silver, copper, mercury, lead …   Universalium

• Native metal — Kondyor Mine Region Chabarowsk: native platinum nugget A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature. Metals that can be found as native deposits singly and/or in alloys include aluminium,… …   Wikipedia

• arsenic — noun /ˈasənɪk / (say ahsuhnik), /ˈasnɪk/ (say ahsnik) 1. a greyish white element having a metallic lustre, volatilising when heated, and forming poisonous compounds. Symbol: As; relative atomic mass: 74.9216; atomic number: 33. 2. Also, arsenite …  

• arsenic disulfide — noun or arsenic monosulfide : an orange, red, or black compound As4S4, As2S2, or AsS occurring native as realgar, also prepared artificially, and used especially in fireworks and formerly as a pigment * * * Chem. an orange red, water insoluble,… …   Useful english dictionary

• arsenic —    A chemical element, symbol As. A medicinal and poisonous element; a brittle steel gray hexagonal mineral, the native form of the element …   Forensic science glossary

• arsenic trisulfide — noun : a yellow compound As2S3 or As4S6 occurring native as orpiment, also prepared artificially, and used in fireworks and as a pigment called also king s yellow * * * Chem. a yellow or red crystalline substance, As2S3, occurring in nature as… …   Useful english dictionary