| Minerals typical of the rocks of the epidote-amphibolite facies include biotite, almandite garnet, plagioclase, epidote, and amphibole. |
| These had a composition between almandite and pyrope, that is, they had both magnesium and iron with aluminum and silica. |
| Both are dark red, but while almandite tends toward a violet tone, pyrope shades toward yellow. |
| Pyrope, the magnesian variety of garnet, does not differ much in color from almandite. |
| Although each stone varies slightly, the mixture is roughly about 55 percent pyrope and 37 percent almandite, along with other elements. |
| Two varieties of garnet, almandite and pyrope, may exhibit the dark blood-red color especially ascribed to garnet. |
