Botryoidal
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crystals A botryoidal ( ) texture or mineral habit, is one in which the mineral has an external form composed of many rounded segments, named for the Ancient Greek ( ), meaning "a bunch of grapes". This is a common form for many minerals, particularly hematite and malachite, which are known for frequently forming botryoidal masses. It is also a common form of goethite, smithsonite, fluorite, and chrysocolla. Similar habits are reniform (kidney-shaped) and mammillary (breast-shaped or partial spheres).
crystals]] A botryoidal ( ) texture or mineral habit, is one in which the mineral has an external form composed of many rounded segments, named for the Ancient Greek ( ), meaning "a bunch of grapes". This is a common form for many minerals, particularly hematite and malachite, which are known for frequently forming botryoidal masses. It is also a common form of goethite, smithsonite, fluorite, and chrysocolla. Similar habits are reniform (kidney-shaped) and mammillary (breast-shaped or partial spheres). ==References== Klein, Cornelis and Cornelius S. Hurlbut Jr.; 1985; Manual of Mineralogy; Wiley; 20th ed.; p 199; http://www.minerals.net/mineral_glossary/botryoidal.aspx http://www.britannica.com/EBchecked/topic/75161/botryoidal-texture
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