翻訳と辞書 Words near each other ・ Dogsled mail ・ Dogsomyn Bodoo ・ Dogsomyn Ganbold ・ Dogsong ・ Dogstar (band) ・ Dogstar (TV series) ・ Dogster ・ Dogsthorpe Star Pit ・ Dogsthorpe, Peterborough ・ Dogtanian and the Three Muskehounds ・ Dogtato ・ Dogtooth ・ Dogtooth (film) ・ Dogtooth Bend Mounds and Village Site ・ Dogtooth herring ・ Dogtooth spar ・ Dogtooth tuna ・ Dogtooth, North Dakota ・ DogTown ・ Dogtown ・ Dogtown (film) ・ Dogtown and Z-Boys ・ Dogtown Poetry Theater ・ Dogtown Reservoir ・ Dogtown, Alabama ・ Dogtown, California ・ Dogtown, El Dorado County, California ・ Dogtown, Florida ・ Dogtown, Glenn County, California ・ Dogtown, Marin County, California Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Dogtooth spar ： ウィキペディア英語版 Dogtooth spar Dogtooth spar is a speleothem found in limestone caves that consists of very large calcite crystals resembling dogs' teeth (hence the name). They form through mineral precipitation of water-borne calcite. Dogtooth spar crystals are not limited to caves, but can grow in any open space including veins, fractures, and geodes. These sharp tooth-shaped crystals are generally of the magnitude of centimeters long, but anomalous samples decimeters long exist, notably in Sitting Bull Crystal Caverns. A layer of crystalline calcite can be found underneath the surface of crystal points. The sharply tooth-shaped crystals typically consist of acute scalenohedrons, twelve triangular crystal faces that ideally form scalene triangles. However, modification of these faces is common, and individual crystal faces may have many more than three edges. Calcite crystallizes in the rhombohedral system, and the most common scalenohedron form has the Miller index (). Spar is a general term for transparent to translucent, generally light-colored and vitreous crystalline minerals. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dogtooth spar」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.