Pre-Ste. Marie 2020 (virtual)

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TZ260AL4: Smithsonite pseudomorphic growths after scalenohedral Calcite crystals. The specimen shows growth of a successive series of layers that indicate that the Calcite was partially replaced in a first phase and finally ended up being totally replaced by Smithsonite.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 3.2 × 2.4 × 2.4 cm = 1.26” × 0.94” × 0.94”

Main crystal size: 2.4 × 1.2 cm = 0.94” × 0.47”

TG66AL4: Smithsonite as pseudomorphic growths after scalenohedral Calcite crystals. The specimen shows the growth of a successive series of layers that indicate that the Calcite was partially replaced in a first phase, then later ended up being totally replaced by Smithsonite, and with Calcite crystallizing again in a final phase, in the form of small white rhombohedral crystals.
San Antonio Mine (San Antonio el Grande Mine), level 8, East Camp, Santa Eulalia District, Municipio Aquiles Serdán, Chihuahua  Mexico (04/2013)

Specimen size: 4.4 × 3.8 × 3.4 cm = 1.73” × 1.50” × 1.34”

Main crystal size: 4.1 × 2.4 cm = 1.61” × 0.94”

TN68AL4: This floater specimen has rosette growths of Azurite crystals with very well defined crystal forms, marked polycrystalline growths and a very intense and vivid color. The high-quality specimen is among the best known for this classic world Azurite locality, and was found by Jimmy Vacek in 1986.
Concepción del Oro, Municipio Concepción del Oro, Zacatecas  Mexico (1986)

Specimen size: 6.1 × 4.7 × 3.9 cm = 2.40” × 1.85” × 1.54”

TC37AL4: A novelty at Tucson 2020 for its appearance and color. Group of very sharp Azurite crystals, partially pseudomorphs after Azurite, with very vivid translucent reflections on the edges and partially covered with a second generation of Malachite with a fibrous appearance and a color very different from the usual one.
Milpillas Mine, level 1100, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (01/2020)

Specimen size: 6.6 × 5 × 2.6 cm = 2.60” × 1.97” × 1.02”

Main crystal size: 2.7 × 2.5 cm = 1.06” × 0.98”

EB76AL4: From a find by local field collectors between 2008 and 2011 in a mineralogically previously little-known locality. Group of crystals, one of them clearly dominant, flattened, with the japan-law twin unusually closed, which gives it a unitary crystal appearance, with sharp crystal forms, transparent, with good luster, colorless and with reddish tones in some areas due to the presence of oxide inclusions.
Harrison Lake, Chilliwack, Regional District Fraser Valley, British Columbia  Canada (2008-2011)

Specimen size: 3.9 × 3.5 × 3.1 cm = 1.54” × 1.38” × 1.22”

Main crystal size: 1.1 × 1.1 cm = 0.43” × 0.43”

NE11AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with tetrahedral crystals of antimony-rich Tennantite-(Fe) and coatings of botryoidal pyrite. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 6.5 × 4.4 × 2.7 cm = 2.56” × 1.73” × 1.06”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”

NV13AL4: Very sharp Chalcocite crystals that form flattened twins with well defined faces and edges, brilliant, on matrix, with very vivid metallic blue iridescent Pyrite coatings. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.4 × 1.5 × 0.8 cm = 0.94” × 0.59” × 0.31”

Main crystal size: 0.4 × 0.4 cm = 0.16” × 0.16”

NJ13AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix, with very vivid metallic blue iridescent Pyrite coatings. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.9 × 3.5 × 0.7 cm = 1.93” × 1.38” × 0.28”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”

NX16AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, shiny, on matrix. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 2.8 × 1.9 × 0.3 cm = 1.10” × 0.75” × 0.12”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

ND26AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, with good luster, on a matrix covered with small white Calcite crystals. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 5.5 × 3.5 × 1.6 cm = 2.17” × 1.38” × 0.63”

Main crystal size: 0.5 × 0.4 cm = 0.20” × 0.16”

NF56AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, bright, on matrix with crystalline Pyrite inclusions. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 3.6 × 3.2 × 1.1 cm = 1.42” × 1.26” × 0.43”

Main crystal size: 0.4 × o.2 cm = 0.16” × 0.00”

NG66AL4: Very sharp Chalcocite crystals that form hexagonal cyclic twins with well defined faces and edges, flattened, lustrous, on matrix, with antimony-rich Tennantite-(Fe) and coatings of iridescent botryoidal Pyrite dominated by purple tones. The specimen has been analyzed and we will send a copy of the analysis to the buyer.
Las Cruces Mine, Gerena-Guillena-Salteras, Comarca Sierra Norte, Seville, Andalusia  Spain

Specimen size: 4.4 × 4 × 3.3 cm = 1.73” × 1.57” × 1.30”

Main crystal size: 0.6 × 0.4 cm = 0.24” × 0.16”