The range in abundance of certain elements is different in beryls from different environments, and these differences are so large that the environment of most beryls can be determined from their composition. 33 minor elements were found in beryl by spectrographic analysis, but only 13 made up as much as 0.1 per cent of any beryl. Beryl from pegmatite contains relatively small amounts of Fe, Mg, Sc, Ti and V, and may contain relatively large amounts of Cs, Rb and Li. Beryl from wallrock adjacent to pegmatite generally has more Ti, Sc, V, Cr, Mg, Fe and Ni than beryl from pegmatite, and less Rb. Beryl comes from several types of veins and hence the amounts of the various elements may vary widely. Generally, however, beryl from veins contains only small amounts of Cs, Rb and Li. Some of the greater amounts of Mg, V, K, Fe, Cr and Ti occur in beryl from veins. Beryl from granite generally contains only minor amounts of Cs, Li, Rb, Cr, Ni, V and Zn, and large amounts of Fe. Beryl from rhyolite contains only small amounts of Li, Na, Mg and Sc, but has the largest amount of all the beryls analyzed of Rb, Fe, Ti, Zn, Zr, Mn, As, B, Ga, Nb, Sn, Y and Yb.

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