| | Keokuk Geode Information Page - The Geode Gallery |
 | | Even though both the geode and the matrix are the same color, the matrix is usually flat or in layers while the geode is round, so geodes appear as "bubbles" in the matrix and look out of place. |
 | | Ferroan dolomite geodes are currently especially abundant at many sites in especially Hancock County, Illinois but is noticeably less-frequent (except at specific sites) in Clark County, Missouri, possibly owing to a decrease in elevation of 50-75 feet in Missouri and a lack of key constituents in the bedrock. |
 | | I hope in the future to post additional pictures of geode minerals and photos of geodes in their host matrix or "in situ" at various locations when time allows to help the collector visually identify geodes in the field when collecting and to assist in proper identification of minerals in Keokuk geodes. |
| www.geodegallery.com /keokuk.html (5433 words) |