US$    € EURO    ¥ YEN    £ POUND    CAN$    AUS$    7 specimens selected  -  back to the Galleries MD-113363 - Algodonite - - Archived Keweenaw Co., Michigan, USA small cabinet, 8.4 x 5.3 x 5.3 cm. CLICK HERE FOR LARGER IMAGE: 8.4 x 5.3 x 5.3 cm. A brassy, nearly solid specimen of algodonite, a rare copper arsenide, from the Keweenaw Peninsula of Michigan. Undoubtedly an old piece. Ex Dr. Gary Hansen Collection. HEAVY at 474 grams or just over 1 pound! MD-130299 - Domeykite, Algodonite - - Archived Cashin Mine, Montrose Co., Colorado, USA thumbnail, 2.5 x 2.3 x 1.9 cm. CLICK HERE FOR LARGER IMAGE: CLICK HERE FOR LARGER IMAGE: 2.5 x 2.3 x 1.9 cm. Domeykite and algodonite are rare copper, arsenic alloys and alloy-like compounds. This is an EXCELLENT, complete all-around thumbnail specimen with super, copper patina and nice form from the famous Cashin Mine of Colorado. SELDOM do you see domeykite with algodonite crystals in this sharpness. Rare, old-time material in this quality from the Carl Davis Collection. MD-275158 - Copper (Var: Whitneyite) - - Archived Calumet Township, Houghton Co., Michigan, USA miniature, 4.8 x 3.1 x 2.8 cm. CLICK HERE FOR LARGER IMAGE: 4.8 x 3.1 x 2.8 cm. According to mindat.com, whitneyite is variety of copper containing up to 11.5% arsenic, with some intimately intergrown algodonite, and not a distinct species. The blue smudge is perhaps azurite. A nice massive sample of the material. Ex. Richard Hauck Collection. MD-275160 - Algodonite - - Archived Calumet Township, Houghton Co., Michigan, USA small cabinet, 5.1 x 4.4 x 3.6 cm. CLICK HERE FOR LARGER IMAGE: 5.1 x 4.4 x 3.6 cm. This is an extremely heavy copper species, being mostly copper. Even though it is not crystalline, it is a rare mineral species and this is a rich piece. The color is very much like that of crystallized copper, with a good patina. Ex. Richard Hauck Collection. MD-43065 - Algodonite, Quartz - - Archived Houghton Co., Michigan, USA small cabinet, 5.6 x 5.2 x 3.5 cm CLICK HERE FOR LARGER IMAGE: A showy, old-time specimen of massive, lightly iridescent, brassy algodonite with radial, colorless to off-white quartz crystal clusters from the famous Keweenaw Peninsula of Michigan. Algodonite is a copper arsenide and this is an excellent representatiive specimen. Ex Richard Hauck Collection. it goes as a nice set with the domeykite earlier in teh auction 5.6 x 5.2 x 3.5 cm RH3-09 - Algodonite - $ 150 Calumet, Michigan miniature, 5.1 x 4.4 x 3.6 cm ex.  Richard Hauck CLICK HERE FOR LARGER IMAGE: This is an extremely heavy copper species, being mostly copper. Even though it is not crystalline, it is a rare mineral species and this is a rich piece. The color is very much like that of crystallized copper, with a good patina. RH3-41 - Algodonite var. "Whitneyite" - $ 75 SOLD Calumet, Michigan miniature, 4.8 x 3.1 x 2.8 cm ex.  Richard Hauck CLICK HERE FOR LARGER IMAGE: According to webmineral.com, whitneyite is actually a synonym of algodonite, and not a distinct species, in which case the blue smudge is perhaps azurite, and the whole piece here is algodonite. (a nice massive sample of the material)