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- List of minerals (11610 bytes)
32: #[[Aragonite]]
88: #[[Burmite]] (amber from Burma)
188: #[[Franckeite]]
189: #[[Franklinite]] (spinel group)
516: #[[Wolframite]] - Animal shell (2105 bytes)
5: ...owed by an intermediate layer of [[calcite]] or [[aragonite]], and then a layer of [[calcium carbonate]] (<no...
7: ...In these mollusks the calcium is concentrated out from the blood where it can crystallize as calcium c... - Limestone (3809 bytes)
1: [[Image:Limestoneshale7342.JPG|frame|right|Limey [[shale]] overlaid by limestone. [...
7: ...nd]]s. Examples include the [[Verdon Gorge]] in [[France]]; [[Malham Cove]] in [[North Yorkshire]], [[...
19: ...merica, most limestone used in construction comes from [[Indiana]].
32: * [[Aragonite]] - Chiton (3478 bytes)
4: ...or other soft-parts beyond the girdle are visible from the dorsal side. Between the body and the girdl...
11: ...n]]. Its Greek-derived name Polyplacophoran comes from the words ''poly-'' (many), ''plako-'' (tablet)... - Karst (5682 bytes)
13: ... planes in the limestone bedrock. Over time these fractures enlarge as the bedrock continues to dissol...
19: ... and other dissolved minerals as the water drips from above. An example is the [[Gruta Rei do Mato]] ...
21: ...sult of slow [[evaporation]]. Rivers which emerge from limestone caves may also produce [[tufa]] terra...
26: ...ently hazardous, as the well water may simply run from a sinkhole in a cattle pasture through a cave a... - Mineral (10947 bytes)
1: ...neral structures]]. Minerals range in composition from pure [[Chemical element|element]]s and simple [...
3: [[Image:minerals.jpg|right|frame|Photo from [http://volcanoes.usgs.gov/Products/Pglossary/m...
7: ...lase]] [[feldspar]]s comprise a continuous series from [[sodium]]-rich [[albite]] (NaAlSi<sub>3</sub>O...
11: ... [[lead]] and [[sulfur]]) and [[periclase]] (made from [[magnesium]] and [[oxygen]]) all share the sam...
20: ...found in a handful of samples, and many are known from only one or two small grains. - Coral (8108 bytes)
4: ... corals obtain much of their nutrient requirement from [[symbiosis|symbiotic]] unicellular [[alga]]e c...
21: ... younger than the Tabulate and Rugose corals, the aragonite skeleton Scleractinian corals does not tend to pr...
23: ...us period of South America and [[Denmark]]. Reefs from both the Silurian and [[Carboniferous]] periods...
38: ...cies exhibit banding in their skeletons resulting from [[annual]] variations in their growth rate. In ...
42: ...his has conservational implications due to damage from removal or destruction of coral.
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