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rns, forming (the oxide) magnesia, with the production of a blinding light (the so-called magnesium light) which is used in signaling, in pyrotechny, or in photography where a strong actinic illuminant is required. Its compounds occur abundantly, as in dolomite, talc, meerschaum, etc. Symbol Mg. Atomic weight, 24.4. Sp…

ucture. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constit…

A blasting powder or dynamite composed of nitroglycerin, wood fiber, sodium nitrate, and magnesium carbonate.

aste but with no sharply defined chemical characteristics. -- Bitter salt, Epsom salts;; magnesium sulphate. -- Bitter vetch (Bot.), a name given to two European leguminous herbs, Vicia Orobus and Ervum Ervilia. -- To the bitter end, to the last extremity, however calamitous.

ins in salt works after the salt is concreted, having a bitter taste from the chloride of magnesium which it contains.

A hydrous sulphate of magnesium and sodium.

eral of a grayish or yellowish color, found in Bolton, Massachusetts. It is a silicate of magnesium, belonging to the chrysolite family.

a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride.

white, pearly mineral, occurring thin and foliated, like talc, and also fibrous; a native magnesium hydrate.

nding to form, or to become, a calx or earthlike substance on being oxidized or burnt; as magnesium, calcium. etc.

A hydrous chloride of potassium and magnesium, sometimes found associated with deposits of rock salt.

A hydrous silicate of magnesium, allied to serpentine, occurring in waxlike masses of a yellow or greenish color.

be obtained from the urine of herbivorous animals when fed on the mango. It consists if a magnesium salt of euxanthic acid. Called also puri, purree, and Indian yellow.

are metallic element, of a silver white color, and low specific gravity (2.1), resembling magnesium. It never occurs naturally in the free state, but is always combined, usually with silica or alumina, or both; as in the minerals phenacite, chrysoberyl, beryl or emerald, euclase, and danalite. It was named from its oxi…

A compound salt consisting chiefly of potassium chloride and magnesium sulphate, occurring at the Stassfurt salt mines in Prussian Saxony.

consisting chiefly of calcium carbonate or carbonate of lime. It sometimes contains also magnesium carbonate, and is then called magnesian or dolomitic limestone. Crystalline limestone is called marble.

A light earthy white substance, consisting of magnesium oxide, and obtained by heating magnesium hydrate or carbonate, or by burning magnesium. It has a slightly alkaline reaction, and is used in medicine as a mild antacid laxative. See Magnesium. Magnesia alba Etym: [L.] (Med. Chem.), a bulky white amorphous substance…

Pertaining to, characterized by, or containing, magnesia or magnesium. Magnesian limestone. (Min.) See Dolomite.

Pertaining to, or containing, magnesium; as, magnesic oxide.

Native magnesium carbonate occurring in white compact or granular masses, and also in rhombohedral crystals.