Incredibly Rare 1982 Amax Buick Mine Cabinet Specimen – Rare Siegenite, Stepped Galena, Cockscomb Marcasite, Chalcopyrite & Dolomite (Gerald Boyer Coll.)
- Weight: 3 lb 14.5 oz (1,772 g)
- Perfect Cabinet Size
- Dimensions: 5.75″ x 5.5″ x 2.75″ (14.6 cm x 14.0 cm x 7.0 cm) — Cabinet Specimen
- Locality: Amax Buick Mine, Bixby, Iron County, Missouri, USA (Viburnum Trend District)
- Harvest Date: November 1982
- Provenance: Harvested By Miner Gerald Boyer (original vintage stenciled \"11/82\" ID mark on host matrix base)
Mineral Breakdown & Features
- Galena: Features large, highly lustrous lead-gray crystals with complex cubic-octahedral modifications. Displays dramatic stepped growth, skeletal/notched corner formations, and prominent parallel surface striations across major faces.
- Siegenite: Rare cobalt-nickel sulfide appearing both as larger well defined steel gray octahedral crystals and as a metallic micro-crystalline crusts and granular coatings scattered across the primary sulfides.
- Marcasite: Well-defined \"cockscomb\" crystal habits and bladed, spear-like aggregates showing a rich brassy-greenish metallic luster.
- Chalcopyrite: Distinct sphenoidal micro-crystals with brassy-gold color nestled in deep crevices and pocket linings.
- Dolomite: Classic tan to cream, saddle-shaped rhombohedral crystals forming drusy linings inside cavities, pocket ledges, and host matrix.
Item Description
This is an Extremely rare super heavy, museum-quality 5-mineral cabinet specimen harvested from the iconic Amax Buick Mine in November 1982 by mineral collector and Miner Gerald Boyer. The piece exhibits the classic Mississippi Valley-Type (MVT) sulfide assemblage that made Missouri\'s Viburnum Trend famous worldwide.
The specimen features mirror-bright, heavily striated galena crystals with pronounced stepped and skeletal growth faces. Nestled throughout the galena matrix are brassy cockscomb marcasite blades, sharp golden chalcopyrite clusters, and well defined steel gray octahedral Siegenite crystals as well as fine crusts of the rare cobalt-nickel sulfide.
Siegenite is the classic signature mineral of the Buick locality. Pocket cavities (vugs) lined with pale, saddle-shaped dolomite rhombs provide contrast and structural depth. The underside retains Gerald Boyer’s original painted field provenance stamp (\"11/82\").
A complete, heavy-metal display piece representing an classic era of Missouri mining dir=\"ltr\" style=\"margin-top:0; margin-bottom:0;\"> (Tag Bank)
Locality & Geology:
Amax Buick Mine Buick Mine Missouri Bixby MO Iron County Missouri Viburnum Trend Viburnum Trend District Old Lead Belt St Francois Mountains MVT Mineral Mississippi Valley Type Missouri Ore Deposit
Minerals & Species:
Siegenite Galena Marcasite Chalcopyrite Dolomite Cobalt Mineral Nickel Mineral Lead Sulfide Iron Sulfide Copper Ore Cockscomb Marcasite Drusy Dolomite Saddle Dolomite
Specimen Descriptors & Features:
Stepped Galena Skeletal Galena Octahedral Galena Metallic Luster Multi Mineral Specimen Cabinet Specimen Heavy Mineral Specimen Vug Specimen Crystal Cavity Matrix Specimen Ore Sample
Collector & Provenance Terms:
Gerald Boyer Collection Old Collection Mineral Vintage 1982 1980s Harvest Provenanced Mineral Systematic Mineralogy Rare Earth Specimen US Mineral Locality Museum Quality Rock Feathered Marcasite
Related Items:
XXL Siegenite Galena Marcasite Chalcopyrite Dolomite - Buick Mine Viburnum Trend
$700.00
