Unique crystal of small green Apatite (analyses indicated Fluorapatite) on two faces of a complete, well terminated Tanzanite crystal. I have seen Tanzanite spcimens with Apatite on the Graphite matrix, but never one with Apatite on the Tanzanite crystal.
science Rock Cycle - When picking rocks for hardscapes use Metamorphic rock, especially with water (so it doesn't leach anything into water) also important to know what type of rockscape animals may have evolved in.
Quartz crystals with blue needles of Dumortierite inside. The locality, is western Bahia, near Vaca Morta Quarry, a remote and hard to reach area near the border with Tocantins state. - Photo: Jeff ScovilQuartz with Dumortierite inclusions
crystals of Linarite. The close-up clearly displays the intense color of these thin Linarite crystals! All the crystals are nestled snug in a vug of Quartz crystals and breccia matrix. From the Grand Reef Mine in Graham County, Arizona.