ABOUT THE COMPOSITION AND NEUTRON ACTIVATION RADIOGRAPHY OF TOPAZ CRYSTALS FROM AN AUTHOR’S COLLECTION
The composition of zoned, zoned-sectorial or relatively homogeneous small topaz crystals from granite pegmatites of Ukraine (Volyn) and Russia (Ilmeny State Reserve in South Urals, Orlovskoe and Sherlovaya Gora deposits in Transbaikalia, and Zabytoe deposit in Primorye) is characterized using scanni...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2024-09-01
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| Series: | Минералогия |
| Subjects: | |
| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2024/10/2024_10_3_1.pdf |
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| Summary: | The composition of zoned, zoned-sectorial or relatively homogeneous small topaz crystals from granite pegmatites of Ukraine (Volyn) and Russia (Ilmeny State Reserve in South Urals, Orlovskoe and Sherlovaya Gora deposits in Transbaikalia, and Zabytoe deposit in Primorye) is characterized using scanning electron microscope with energy-dispersive spectrometer and partly by laser mass spectroscopy. Photo expositions of neutron activation radiography with data on chemical composition and possible isotopes, which form the pattern, are presented for some topaz crystals. According to the composition, the studied topaz was subdivided on three types according: 1) mostly fluoride (58%); 2) fluoride-hydroxyl (21%); 3) mostly hydroxyl (21%). The advantage of the neutron activation radiography for detecting patterns of zoned and zoned-sectorial heterogeneity of the composition of topaz crystals is shown. |
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| ISSN: | 2313-545X 2782-2044 |