a hemimorphic crystal of hemimorphite, characterized by its distinct polar symmetry. - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
star tetrahedron ,formed by two interpenetrating tetrahedra. this geometry is often seen in minerals like diamond or fahlore (tetrahedrite). - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
minerals and rocks ,spherulitic structure in grainy stone of a ball diorite, semi-polished (corsica, france) - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標熔岩
minerals and rocks ,semi-polished structure of porphyrite (jabal ad dukhan, bahrain) - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
four-sided prism capped by a four-sided pyramid ,crystal forms of the quadratic systems - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
hexagonal pyramids of the 1st order ,crystal forms of the quadratic and hexagonal systems - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
dodecahedral/12-sided pyramid ,crystal forms of the quadratic and hexagonal systems - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
a more complex form including a flat "base" or pinacoid at the top and bottom ,crystal forms of the quadratic and hexagonal systems - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
a combination of a six-sided prism capped by pyramids ,crystal forms of the quadratic and hexagonal systems - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
minerals and rocks ,almond stone structure of melaphyre (ilfeld, thuringia, germany) - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
crystal forms of the tetragonal system ,tetragonale pyramide ,simple four-sided pyramid aligned with the primary axes. - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
crystal forms of the tetragonal system ,tetragonale pyramide ,pyramid rotated 45*relative to the first order. - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
crystal forms of the tetragonal system ,tetragonales prisma ,four-sided rectangular column (square cross-section). - 立方氧化鋯 幅插畫檔、美工圖案、卡通及圖標
