Meerschaum - Meerschaum

Japanese: 海泡石 - かいほうせき

A fibrous mineral with a grayish white, yellowish red or blue-green color. It is found in serpentine, skarn, hot spring deposits, etc. Its chemical formula is Mg ₄ Si ₆ O ₁ ₅ (OH) ₂・₆ H ₂ O, and it contains small amounts of Al, Fe, Na, and H. It has an orthorhombic crystal system. Its hardness is 2-2.5, and its specific gravity is 2.25. It is so light that it floats on water when dry, and has a dense (honey) texture, making it a highly prized pipe material (Meerschaum). It is mainly found in Asia Minor, and its Vienna filigree carvings are famous.
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Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

灰白色または黄赤色か青緑色を帯びた繊維状の鉱物。蛇紋岩，スカルン，温泉沈殿物などに産出。化学式はMg₄Si₆O₁₅（OH）₂・₆H₂Oで，Al，Fe，Na，Hを少し含む。斜方晶系。硬度２〜2.5，比重2.25。乾燥時には水に浮かぶほど軽く，手ざわりは緻密(ちみつ)でパイプ材（メアシャウム）として珍重。小アジアに主産，ウィーンの細工彫は有名。
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