| Where the intergrowth is coarse enough and sufficiently abundant to permit chemical analysis, the bulk composition averages about 25 percent quartz and 75 percent feldspar. |
| Spherulites frequently have a radiating structure that results from an intergrowth of quartz and orthoclase. |
| Chalcedony is composed of a very fine intergrowth of quartz and moganite which have respectively a different crystal structure. |
| The Lafayette meteorite contains abundant iddingsite, a fine-grained intergrowth of smectite clay, ferrihydrite, and ionic salt minerals. |
| Graphic granite is a regular intergrowth of quartz and feldspar that gives an angular appearance suggestive of cuneiform writing. |
| A regular or twin intergrowth between two hemihedral crystals frequently takes place and results in the production of a holohedral form. |
