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Gaudefroyite mineral data, information about Gaudefroyite, its properties and worldwide locations. ... This page provides mineralogical data about Gaudefroyite. ... Classification of Gaudefroyite...
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Multiple photos available Gaudefroyite : Ca4Mn3+2-3[(O,OH)3|CO3|(BO3)3] ... A superb example of the Gaudefroyite/Andradite/Baryte combinations from Black ...
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Gaudefroyite. # 515. Gaudefroyite from N Chwaning II Mine, Kuruman, South Africa. Gaudefroyite. Large Crystal. Very Rare. Size: Thumbnail 22 x 10mm ...
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Color: Black; in reflected light, ... At the Wessels and N’Chwaning mines, ... No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without the prior written permission of Mineral Data Publishing.
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GAUDEFROYITE/HAUSMANNITE/ANDRADITE - South Africa. View Product Images ... red andradite crystals and framed with lustrous black gaudefroyite crystals. ...
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WT1103 Gaudefroyite NChwaning II Mine, Kuruman, North Cape Province, South Africa ... BLM38335 Gaudefroyite Wessels Mine, North Cape Province, South Africa ...
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A transmission electron microscopy (TEM) study of gaudefroyite, , from the Wessels mine, Kalahari manganese field, South Africa, shows strong, continuous streaking in selected-area electron diffraction (SAED) patterns.
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sure of formation, where gaudefroyite and barite were formed ... The structure of gaudefroyite was determined and refined by Granger and Protas (1965), ...
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Excellent crystals of gaudefroyite on quartz with yellow crystalline and granular ettringite and a thin layer of andradites from one of the N'Chwaning Mines in the Kalahari manganese fields, Kuruman, South Africa.
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gaudefroyite are a = 10.606(1) and c = 5.896(1) Å. The symmetry of gaudefroyite is lower than hexagonal because of the streaked reflections. ...
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