Sulfides

Displaying 51 - 100 of 479
Catalog # Name Description
51 00.2.3.644.0001 Galena Drusy chalcopyrite crystals cover 40%. Lead and copper ore.
52 00.2.3.644.0003 Galena Massive, plumose. Color: GY
53 00.2.3.645.0001 Galena Group of cubic crystals, largest 1" x 1" Color: GY
54 00.2.3.645.0002 Galena Crystals.
55 00.2.3.645.0004 Galena Large chunk showing many shiny cleavage faces. Some chalcopyrite present. Color: GY
56 00.2.3.645.0006 Galena Interlocking crystal cubes with scattered small chalcopyrites and encrustations. Color: GY
57 00.2.3.645.0007 Galena Vein of crystals. Color: GY
58 00.2.3.646.0002 Galena Massive galena, showing cleavage faces, on quartz. Color: GY
59 00.2.3.646.0003 Chalcopyrite Massive interrelated chalcopyrite galena and quartz.
60 00.2.3.646.0005 Galena Massive, coarsely granular. Color: GY
61 00.2.3.646.0007 Galena Cubic cast coated with dolomite crystals containing cubo-octahedral crystals. Color: GY
62 00.2.3.647.0001 Galena Large weathered cubic crystals. Color: GT
63 00.2.3.650.0005 Pyrargyrite Massive, black, metallic.
64 00.2.3.650.0006 Sphalerite Dark crystals to 1/4" with pale purple fluorite cubes (1/2 of a paper label)
65 00.2.3.652.0001 Sphalerite None
66 00.2.3.652.0002 Sphalerite Two miniatures are basically massive; hand ball of crystals
67 00.2.3.652.0003 Sphalerite Mammilated sphalerite on short matrix.
68 00.2.3.652.0004 Sphalerite With iron pyrite.
69 00.2.3.653.0001 Sphalerite Crystals to 1/2" covering one side; few chalcopyrite crystals at one end
70 00.2.3.653.0002 Sphalerite Sphalerite nodule with partial galena filling.
71 00.2.3.655.0001 Marcasite Nodular aggregates starting to deompose.
72 00.2.3.655.0003 Marcasite Marcasite--radiating structures.
73 00.2.3.655.0005 Realgar Almost totally changed to orpiment -As2S2. Color: OR
74 00.2.3.656.0001 Pyrite Massive with one side covered with cubes to 1/4". Other scattered crystals; some striated faces.
75 00.2.3.656.0002 Pyrite Parts of cubic crystals, brassy.
76 00.2.3.656.0005 Pyrite Three dark (tarnished?0 cubes 1 - 1/4" x 14" 2 - 1/8" x 1/8"
77 00.2.3.657.0001 Chalcocite Mostly sphalerite with clear "ruby" crystals on one side
78 00.2.3.657.0002 Hessite None
79 00.2.3.657.0003 Chalcocite Dark brown massive.
80 00.2.3.657.0004 Molybdenite None
81 00.2.3.657.0005 Chalcocite Dark brown massive.
82 00.2.3.657.0006 Stibnite Steel gray massive.
83 00.2.3.657.0009 Sphalerite Massive sphalerite on quartz crystals (paper label)
84 00.2.3.657.0010 Stibnite Prismatic crystals encased in matrix.
85 00.2.3.659.0001 Pyrrhotite Granular aggregate with chalcopyrite. Color: YL
86 00.2.3.659.0002 Pyrrhotite Granular aggregate with chalcopyrite. Color: BS
87 00.2.3.659.0003 Pyrrhotite Massive, granular, bronze tarnishing to gray.
88 00.2.3.659.0004 Pyrrhotite Massive. Color: YL
89 00.2.3.661.0001 Chalcopyrite Massive, brass colored on dark matrix (epidote?).
90 00.2.3.661.0002 Chalcopyrite Small brassy crystals on matrix; small amount of malachite?
91 00.2.3.661.0003 Chalcopyrite None
92 00.2.3.661.0004 Chalcopyrite Disseminated throughout matrix, some quartz.
93 00.2.3.661.0006 Chalcopyrite Massive, brassy color.
94 00.2.3.661.0007 Marcasite Cockscomb crystals.
95 00.2.3.661.0008 Arsenopyrite Massive, silver gray, fine granular; (paper label 0).
96 00.2.3.661.0009 Arsenopyrite Gold, metallic crystals on massive; (color & disintegration more like marcasite FeS2); 1 M & 1 bottle of fragments (disintegrated)
97 00.2.3.662.0001 Cobaltite Complete Foote label and price. Color: GY
98 00.2.3.662.0002 Cobaltite Massive; one cut side. Bit of red erythrite coating on uncut side. Color: GY
99 00.2.3.662.0003 Cobaltite Pyritohedral crystals 1/2' - 3/8".
100 00.2.3.662.0005 Zinkenite Zinkenite is one of a few sulfide minerals that form fine acicular crystals that appear as hair-like fibers. The fibrous aggregates may be so thick as to cover a specimen with a mat of hair-like fibers or it may be sparsely dessiminated between other minerals and may be confused with stray hairs or dark lint. Jamesonite, boulangerite and millerite are other sulfides that form similar acicular crystals. These sulfides as well as zinkenite have been called "feather ores" because of this unusual habit. Zinkenite is a sulfosalt, a segment of sulfides where the antimony acts more like a metal than a non-metal and occupies a position where it is bonded to sulfurs. A variety of zinkenite from Tasmania contains a small amount of silver.