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A study on the characteristics of some opals from Turkey
The mineralogical characteristics of some Turkish opal-CTs collected from West and Middle Anatolia were studied. They are originated from Eocene to Upper Miocene aged volcanic-sedimentary formations.Expand
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The crystal structure of parahopeite
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X-Ray Diffraction Intensity Ratios I(111)/I(3¯11) of Natural Heulandites and Clinoptilolites
Heulandite-group zeolites are abundant in the Miocene pyroclastics from Western Anatolia, Turkey. We investigated the relation between the I(111)/I(3¯11) intensity ratios measured by X-rayExpand
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CHARACTERIZATION OF THE CLINOPTILOLITE-RICH TUFFS OF BIGADIÇ: VARIATION OF THE ION-EXCHANGE CAPACITY WITH PRETREATMENTS AND ZEOLITE CONTENT
ABSTRACT One of the largest zeolite-rich occurrences in Western Anatolia is found in the Bigadic Neogene basin. The clinoptilolite-rich tuffs of Bigadic are in the form of coarse grained glassy ashExpand
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Thermal behavior of heulandites and clinoptilolites of Western Anatolia
Selected samples of heulandites and clinoptilolites from different zeolitized formations in Western Anatolia(Turkey) have been examined by differential thermal(DTA) and thermogravimetric(TGA)Expand
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Zeolitization of Tuffaceous Rocks in the Keşan Region, Thrace, Turkey
A 33 metre thick pyroclastic-rich zone of the Mezardere formation of Oligocene age is exposed in the Kesan region of Thrace, Turkey. In this zone, vitreous tuffs of dacitic composition have alteredExpand
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Veatchite-A, a new modification of veatchite
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Crystal structure of howlite, Ca2SiB5O9(OH)5
The crystal structure of teruggite
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X-RAY DIFFRACTION INTENSITY RATIOS I ( 111 ) / / ( 311 )
Heulandite-group zeolites are abundant in the Miocene pyroclastics from Western Anatolia, Turkey. We investigated the relation between the l(111)/I(311) intensity ratios measured by X-ray diffractionExpand