Rutilated quartz. Rutilated quartz,also known as sagenitic quartz,occurs when acicular crystals of rutile (titanium dioxide,dark) are enclosed in quartz (silicon dioxide,clear). Here,the quartz crystal has a hexagonal rhombohedral trapezohedral shape. Rutile is a major ore of the metal titanium | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
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