The minerals found are albite, almandine, annite, beryl, aquamarine, biotite, columbite, elbaite, microcline, muscovite, and quartz.
22.
Almandine, sometimes incorrectly called almandite, is the modern gem known as carbuncle ( though originally almost any red gemstone was known by this name ).
23.
The different species are pyrope, almandine, spessartine, grossular ( varieties of which are hessonite or cinnamon-stone and tsavorite ), uvarovite and andradite.
24.
In chemical composition it may be considered as essentially an isomorphous mixture of pyrope and almandine, in the proportion of two parts pyrope to one part almandine.
25.
In chemical composition it may be considered as essentially an isomorphous mixture of pyrope and almandine, in the proportion of two parts pyrope to one part almandine.
26.
Limonite pseudomorphs have also been formed from other iron oxides, hematite and magnetite; from the carbonate siderite and from iron rich silicates such as almandine garnets.
27.
Chemically, the rhodolite is a mix of pyrope and almandine garnets, part of the pyrope-almandine solid-solution series, with an approximate garnet composition of Py 70 Al 30.
28.
Chemically, the rhodolite is a mix of pyrope and almandine garnets, part of the pyrope-almandine solid-solution series, with an approximate garnet composition of Py 70 Al 30.
29.
Almandine, Fe 2 + 3 Al 2 Si 3 O 12, is the ferrous iron end member of the class of garnet minerals representing an important group of rock-forming transition zone.
30.
The club s collection of more than 700 mineral specimens from New York City is stored at the American Museum of Natural History and includes a large 6 inch almandine garnet called the Subway Garnet discovered in 1885.
