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Kruta Balka Deposit

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Journal Article
Published: 01 February 2020
American Mineralogist (2020) 105 (2): 162–181.
...Gerhard Franz; Oleksii Vyshnevskyi; Michail Taran; Vladimir Khomenko; Michael Wiedenbeck; Ferry Schiperski; Jörg Nissen Abstract We investigated emerald, the bright-green gem variety of beryl, from a new locality at Kruta Balka, Ukraine, and compare its chemical characteristics with those...
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Cr and V contents (in apfu) of emeralds from <b>Kruta</b> <b>Balka</b>; shown are the ave...
Published: 01 February 2020
Figure 5. Cr and V contents (in apfu) of emeralds from Kruta Balka; shown are the average compositions (large open circles) of three crystals and the individual point analyses (small dots), to illustrate the strong heterogeneity within a crystal and from crystal to crystal. Many crystals from
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Characterization of emerald <b>deposits</b>, based on Cr# = Cr&#x2F;(Cr+V) vs. Mg# = Mg...
Published: 01 February 2020
from metamorphosed mafic-ultramafic rocks. A small group (11 localities) is considered as transitional , where the sources for Mg+Fe+Cr+V are both mafic-ultramafic rocks and metasediments; Kruta Balka is a typical example for this group, and most of the Australian deposits belong to it. All other
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Sum of trivalent (Al+Cr+V+Sc) vs. that of divalent cations (Mg+Fe+Mn; in ap...
Published: 01 February 2020
, arbitrarily set at 0.25 apfu; the Ukrainian Kruta Balka occurrence belongs to the group with a low amount of substitution, as most of the deposits classified as transitional and sedimentary. The majority of the “ultramafic” deposits show a high amount of femag-component. Exchange vectors are shown