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Whewellite: Ca(C2O4)·(H2O)
Comments: White crystal of whewellite, perched on a spray of brown calcite crystals. Location: Shaft 21, Schlema, Hartenstein, Germany. Scale: 7 x 6 x 4 cm. © Rob Lavinsky
Yttrocerite: CaF2 + (Y,Ce)F3
Comments: Blue/purpley Yttrocerite in matrix. Location: Rockport Granite Company quarry, Rockport, Essex Co., Massachusetts, USA. Scale: Specimen Size 6.9 x 3.7 x 1.8 cm. © Rob Lavinsky
Zircon: ZrSiO4
Comments: Deep red-wine colored, lustrous, internally bright zircon crystals in matrix. Location: Thorfjord, Seiland, Alta, Norway. Scale: 13 x 10.5 x 9 cm. © Rob Lavinsky
Zvyagintsevite: Pd3Pb
Comments: Sharp cubic crystal of zvyagintsevite. Location: Konder, Khabarovsk territories, Russian Far East, Russia. Scale: Crystal Size 0.5 x 0.5 x 0.2 cm. © Rob Lavinsky