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This mineral specimen consists of a twinned grouping of cerussite crystals from the Grand Reef Mine, Arizona, a classic locality known for fine lead carbonate specimens. The cerussite crystals display well-developed twinning, producing complex intergrown forms that highlight the mineral’s orthorhombic symmetry and distinctive crystal habit.
The crystals are sharply defined, with clean edges and good surface luster, and are arranged in an interlocking cluster that emphasizes the natural twinning relationships common to cerussite from this locality. The specimen offers clear crystallographic interest, as twinning is a characteristic and often sought-after feature of cerussite.
This piece is a representative example of cerussite mineralization from the Grand Reef Mine (Graham County, Arizona, USA) and is suitable for systematic collections, study, or display. From the collection of Nicholas Theis, a geologist with a mineral named in his honor (Theisite).
13x13x12mm
3.4g