| On Crater Peak, and below on Gibraltar, hypersthene andesite occurs with considerable variation of color and texture. |
| They rarely contain olivine, but pleochroic hypersthene is by no means rare in them. |
| It may be noted also that hypersthene shows a tendency to magmatic alteration, although only rarely. |
| Both are light colored, and the pleochroism of the hypersthene is sometimes quite faint. |
| Little-weathered grains of hypersthene and rare clasts of limestone persist throughout the profile, as evidence for limited chemical weathering. |
| How about apatite, apophyllite, axinite, chlorite, hypersthene, scapolite, serpentine, tantalite, and wolframite? |
