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Iowa gems and minerals in your pocket /
From the spiky teeth of a geode containing sparkling quartz crystals, the rich browns and golds of smoky quartz and goethite needles on calcite, and the coral-like branches of plumose barite to the abstract reds and whites of polished agate cabochons, world-class mineral crystals are harvested from...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
[Iowa City, Iowa] :
University of Iowa Press,
©2012.
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| Colección: | Bur Oak guide.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Twinned calcite crystal; Pyrite and marcasite crystals on calcite; Millerite brush; Doubly terminated calcite; Sphalerite crystal; Marcasite crystal clusters on pyrite; Single and twinned calcite crystals; Fluorite crystals with pyrite and calcite; Dogtooth calcite crystal cluster; Coldwater agate; Polished Coldwater agate; Spherical chert nodules; Zoned rhombohedral calcite crystals; Polished Lake Superior agates; Yellow fluorite crystalson calcite; Galena crystals ("cog lead"); Wedge-shaped bariteblades; Cavities containing barite and calcite.
- Geode containing barite and dogtooth calcite crystalsColloformpyrite; White calcite "pineapples" on brown calcite; Smoky quartz and goethite needles on calcite; Pink barite on brown calcite; Tabular celestite crystals; Barite crystals; Rhombohedral calcite crystals; Tabular golden barite crystal; Calcite and marcasite boxwork; Marcasite crystal cluster; Banded agate and quartz; Agate cabochons; Millerite tufts with colloform quartz; Tabular barite crystals; Calcite with marcasite inclusions; Colloform pyrite with calcite crystals; Calcite crystal containing rhombohedral phantom.
- Plumose bariteDoubly terminated calcite crystal with marcasite rosettes; Sphalerite crystal cluster; Prismatic barite crystals; Octahedral pyrite crystals; Transparent calcite crystal; Aragonite needles on dolomite; Geode, colloform quartz; Geode, brown calcite on quartz; Geode, pink and golden calcite on quartz; Geode, calcite and pyrite cubes on quartz.