STUDY GUIDE FOR SEDIMENTARY ROCKS
| Yes or No | Quartz, clay, calcite, etc. | Silica/ calcite/ iron oxide/ clay matrix/ none | gravel/ sand / silt / clay / none | Clastic /Chemical | ||
|
No. |
Acid Rx |
Chief Minerals |
Cementing Material |
Clastic
Particle Size |
Classification |
Rock Name |
| 201 |
|
clay | silica | clay | clastic | black shale |
| 202 |
|
quartz | silica | sand | clastic | quartz sandstone |
| 203 |
|
quartz, feldspar, mica, clay | silica, clay | sand | clastic | arkose sandstone |
| 204 |
|
shells (calcite) | calcite | does not apply | chemical | coquina limestone |
| 208 |
|
angular quartz pebbles | silica | gravel | clastic | breccia |
| 209 |
|
no minerals (organic matter) | none | does not apply | chemical | bituminous coal |
| 210 |
|
coarse calcite crystals | calcite | does not apply | chemical | massive limestone |
| 211 |
|
silt (quartz) | silica | silt | clastic | siltstone |
| 212 |
|
calcite | calcite | does not apply | chemical | limestone |
| 213 |
|
lime mud
(CaCO3 micrite) |
lime mud
(CaCO3 micrite) |
does not apply | chemical | lithographic limestone
(lime mudstone) |
| 214 |
|
small fossils (calcite) | calcite | does not apply | chemical | fossil limestone |
| 215 |
|
mostly shells (calcite) | calcite | does not apply | chemical | coquina limestone |
| 219 |
|
rounded quartz gravel, sand | silica | gravel | clastic | conglomerate |
| 220 |
|
oolites (inorganic calcite beads) | calcite | does not apply | chemical | oolitic limestone |