Tennantite and Siderite - classic European
Barbora Adit, Knottei area, Krupka, Krusne Hory Mts
Usti nad Labem Region (Bohemia),
5.4 x 3.3 x 2.2 CM (small cabinet/ large miniature)
new year 2021
A very old and very rich Czech Tennantite from this historic mining region. The matrix is a sparkling Quartz with several large (for the locality) Siderite rhombs up to 2.5 CM. The Tennantites are in clusters of many small, distinctive crystals, up to 4mm - though most are smaller. The Tennantite masses are relatively bright, lustrous and includes many twins. A small amount of Chalcopyrite is seen with magnification. This can be displayed from several angles that show more Dolomite or more Tennantite depending on preference.
2.6 x 2 x 1.2 CM (thumbnail)
A cluster of very sharp Tennantite crystals with no matrix. The patina on this thumbnail is a sooty dark metallic which is typical for Tsumeb. Displays well from several angles, the Tetrahedral form crystals form a sculptural grouping that shows the textbook perfect form well.