There is a perfectly terminated apatite crystal 1.5 cm long that shows up from the the magnetite crystals. The magnetites are up to 1 cm, all with nice terminations. Showy specimen.

Henderson #2 Mine, Chibougamau, Québec, Canada  - Very nice group of small cubanite crystals associated with calcite on matrix. 2.9 × 2 × 1.9 cm 

Henderson No. 2 Mine, Chibougamau, Quebec Province, Canada - Lustrous twinned Cubanite crystals and colorless gemmy Calcite on a matrix of sulphides and Calcite.  The largest Cubanite crystal measures 5 mm. Very nice specimen of  3.5x2.5x1.5 cm in size. Ex Arkane collection.

Majuba Hill Mine, Pershing Co., Nevada, USA - Bright blue acicular crystals of Clinoclase on matrix.Overall size is 2.5 x 2.3 x 1.5 cm

Sweetwater Mine, Reynolds  Co., Missouri, USA - Beautiful iridescent brassy to purplish large crystals of chalcopyrite to 1.0 cm in size scattered over the top of a 4.5 x 4.5 x 2.0 cm dolomite crystal coated matrix. Shows nicely all around and in excellent condition. Very good large crystals for the species from this locality. 

Mammoth-Saint Anthony Mine, Tiger, Mammoth District, Pinal Co., Arizona, USA - A 4.3 x 4.3 x 2.7 cm matrix is hosting a grouping of  reticulated cerussite crystals to 3.0 across. The largest  individual crystal is 1.3 cm in length. Nice bright orange wulfenites also. Minor damage is present as seen in the photos.

Fletcher mine, Viburnum Trend, Reynolds Co., Missouri, USA - A classic calcite specimen from this locality. The calcite is biterminated and 2.8 cm in size and sits on a matrix formed by a rich coating of chalcopyrites and dolomite with siegenite ! Nice combination specimen of 3.5x3.5x3 cm

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Well shaped bi-terminated calcite crystal of 3.7 cm stands on this matrix coated by dolomite and chalcopyrite crystals. Nice rock of 8x3.7x1.8 cm

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Very nice cluster of terminated calcite crystals on a coat of tiny dolomites and chalcopyrites. The calcite are all terminated and 2.5-3.5 cm in size. Overall size is 8x2.5x1.8 cm

Sweetwater  Mine, Missouri, USA - Colorless to very pale yellowish translucent semi-lustrous prismatic crystals of calcite to 3.7 cm in length set attractively over the top of a 9.5 x 5.5 x 5.0 cm pyrite, chalcopyrite, and dolomite crystal matrix. Very minimal micro-cleaving present, this is in very good condition and sits very nicely by itself for display.