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Strontianite or strontium carbonate (SrCO3) is the main ore for extracting strontium used in TV screens and firework colours It has orthorhombic crys
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church in clausthal-zellerfeld in the resin
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Low Mountain Landscape with Horizon Lines in Winter Altenau Harz Lower Saxony Germany
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Sun through Coniferous Forest in Winter Altenau Harz Lower Saxony Germany
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Low Mountain Landscape with Horizon Lines at Dusk Altenau Harz Lower Saxony Germany
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