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- Hopper_crystal abstract "A hopper crystal is a form of crystal, defined by its "hoppered" shape.The edges of hoppered crystals are fully developed, but the interior spaces are not filled in. This results in what appears to be a hollowed out step lattice formation, as if someone had removed interior sections of the individual crystals. In fact, the "removed" sections never filled in, because the crystal was growing so rapidly that there was not enough time (or material) to fill in the gaps. The interior edges of a hoppered crystal still show the crystal form characteristic to the specific mineral, and so appear to be a series of smaller and smaller stepped down miniature versions of the original crystal.Hoppering occurs when electrical attraction is higher along the edges of the crystal, this causes faster growth at the edges than near the face centers. This attraction draws the mineral molecules more strongly than the interior sections of the crystal, thus the edges develop more quickly. However, the basic physics of the this type of growth is the same as that of dendrites but, because the anisotropy in the solid–liquid inter-facial energy is so large, the dendrite so produced exhibits a faceted morphology. Hoppering is common in many minerals, including lab-grown bismuth, galena, quartz (called skeletal or fenster crystals), gold, calcite, halite (salt), and water (ice).".
- Hopper_crystal thumbnail Bismuth_crystal_macro.jpg?width=300.
- Hopper_crystal wikiPageExternalLink bismuth.htm.
- Hopper_crystal wikiPageExternalLink page-993c-text.
- Hopper_crystal wikiPageID "991459".
- Hopper_crystal wikiPageRevisionID "604681063".
- Hopper_crystal hasPhotoCollection Hopper_crystal.
- Hopper_crystal subject Category:Crystals.
- Hopper_crystal type Crystal114883206.
- Hopper_crystal type Crystals.
- Hopper_crystal type Matter100020827.
- Hopper_crystal type PhysicalEntity100001930.
- Hopper_crystal type Solid115046900.
- Hopper_crystal comment "A hopper crystal is a form of crystal, defined by its "hoppered" shape.The edges of hoppered crystals are fully developed, but the interior spaces are not filled in. This results in what appears to be a hollowed out step lattice formation, as if someone had removed interior sections of the individual crystals. In fact, the "removed" sections never filled in, because the crystal was growing so rapidly that there was not enough time (or material) to fill in the gaps.".
- Hopper_crystal label "Hopper crystal".
- Hopper_crystal sameAs m.03x984.
- Hopper_crystal sameAs Q5901231.
- Hopper_crystal sameAs Q5901231.
- Hopper_crystal sameAs Hopper_crystal.
- Hopper_crystal wasDerivedFrom Hopper_crystal?oldid=604681063.
- Hopper_crystal depiction Bismuth_crystal_macro.jpg.
- Hopper_crystal isPrimaryTopicOf Hopper_crystal.
