| This band, composed of pyroxenite and gabbro, is sandwiched between a peridotite intrusion to the north and a band of pegmatite to the South. |
| Beryl, columbite, and triphylite are common accessory minerals in the Estes pegmatite, especially in the coarse-grained layers. |
| The pegmatite is composed of microcline, plagioclase and quartz with minor amounts of clinopyroxene, orthopyroxene, ilmenite and zircon. |
| Large anhedral masses of yttrian fluorite, measuring to several feet across, were found at the White Cloud pegmatite. |
| She notes that lime-green to purplish-green modified fluorite octahedra have been found at this pegmatite. |
| They described a distorted 5.5 x 4-cm dodecahedral crystal of genthelvite from a small pegmatite near Stove Mountain. |
