. Bulletin of the British Museum (Natural History), Mineralogy. An 60 ALBITE CARLSBAD TWINS. Anso An 80 -1âIââ âI I p I 50" 55' o^'^TA 60" I â â » » â â 65" 70" 6^ 60 55" . I I I I 75" An 50 i-"" An 70 An 60 < An 80. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)

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