Difference between revisions of "Shell composition"
| Line 8: | Line 8: | ||
: - with organic cement | : - with organic cement | ||
: - with calcareous cement | : - with calcareous cement | ||
| − | * secreted [http://en.wikipedia.org/wiki/Calcium_carbonate calcium carbonate] ([http://www.webmineral.com/java/Calcite.shtml calcite] or [http://www.webmineral.com/java/Aragonite.shtml aragonite]) | + | * secreted [http://en.wikipedia.org/wiki/Calcium_carbonate calcium carbonate] ([http://www.webmineral.com/java/Calcite.shtml calcite] or [http://www.webmineral.com/java/Aragonite.shtml aragonite]) |
: - [[Microgranular foraminifera|microgranular]] | : - [[Microgranular foraminifera|microgranular]] | ||
: - [[Porcellaneous foraminifera|porcellaneous]] | : - [[Porcellaneous foraminifera|porcellaneous]] | ||
: - [[Hyaline foraminifera|hyaline]] (glassy) | : - [[Hyaline foraminifera|hyaline]] (glassy) | ||
* secreted ???silica (very uncertain) | * secreted ???silica (very uncertain) | ||
