Displaying 301 - 400 of 42570
Cat. # Name Description
301 Chalcocite Dark brown massive.
302 Molybdenite None
303 Chalcocite Dark brown massive.
304 Stibnite Steel gray massive.
305 Scheelite Massive, grey.
306 Wolframite (Ferberite) Black, some crystal faces showing.
307 Sphalerite Massive sphalerite on quartz crystals (paper label)
308 Stibnite Prismatic crystals encased in matrix.
309 Graphite None
310 Graphite "Black lead".
311 Graphite None
312 Sulfur None
313 Sulfur Sulfur crystals.
314 Sulfur Massive in matrix.
315 Sulfur Drusy crystals.
316 Pyrrhotite Granular aggregate with chalcopyrite. Color: YL
317 Pyrrhotite Granular aggregate with chalcopyrite. Color: BS
318 Pyrrhotite Massive, granular, bronze tarnishing to gray.
319 Pyrrhotite Massive. Color: YL
320 Wolframite (Ferberite) With Tunctate decomposition.
321 Wolframite (Ferberite) Small, sparkly crystals on matrix.
322 Wolframite (Ferberite) Blades of Ferberite in quartz.
323 Wolframite Massive pyrite with copper crystals.
324 Corundum Rounded (stream worn) rock. Color: TN
325 Corundum Massive, with magnetite known as emery. Color: GY
326 Corundum Massive with magnetite known as emery. Color: BK
327 Kyanite Crystal aggregate. Color: BL
328 Quartz var. Chert Translucent, known as "oriental topaz". Color: GD
329 Chalcopyrite Massive, brass colored on dark matrix (epidote?).
330 Chalcopyrite Small brassy crystals on matrix; small amount of malachite?
331 Chalcopyrite None
332 Chalcopyrite Disseminated throughout matrix, some quartz.
333 Chalcopyrite Massive, brassy color.
334 Marcasite Cockscomb crystals.
335 Arsenopyrite Massive, silver gray, fine granular; (paper label 0).
336 Arsenopyrite Gold, metallic crystals on massive; (color & disintegration more like marcasite FeS2); 1 M & 1 bottle of fragments (disintegrated)
337 Cobaltite Complete Foote label and price. Color: GY
338 Cobaltite Massive; one cut side. Bit of red erythrite coating on uncut side. Color: GY
339 Cobaltite Pyritohedral crystals 1/2' - 3/8".
340 Cuprite Massive, heavy; some malachite. Color: RD-BR
341 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.
342 Tetrahedrite Crystals on quartz matrix; also chalcopyrite crystals
343 Proustite Massive, reddish black; purchased from Foote.
344 Skutterudite Massive; var. smaltite. Color: GY
345 Skutterudite Massive; possible erythrite on one corner. Color: GY-YL
346 Stannite Small, dark gray crystals
347 Franklinite Granules to 3/8" in matrix. Color: BK
348 Joseite Joesite, bismuth, sulfur, tellurium, selineum.
349 Carnallite Undetermined # in bottle.
350 Turquoise Massive; pale blue.
351 Clinochlore None
352 Rhodochrosite None
353 Rhodochrosite Rhodocrosite with calcite on black limestone. Original catalog entry indicates 3 specimens.
354 Rhodochrosite None
355 Rhodochrosite Rhococrosite on calcite.
356 Sodalite None
357 Fluorite None
358 Smithsonite None
359 Vermiculite None
360 Clinochlore Ripidolite, the iron rich variety of clinoclore. Color: GR
361 Clinochlore A chlorite schist with clear, glassy blebs. Color: GR
362 Biotite (Mica group) Small plates of biotite, with calcite and red hematite. Color: BK
363 Muscovite Transparent parallelogram. Color: CL
364 Phlogopite Thick plate. Color: BR, CL Phlogopite image
365 Biotite (Mica group) Dense laminae. Color: BK
366 Muscovite Type of muscovite referred to as plumose. Color: GR
367 Biotite (Mica group) Thin sheet. Color: BK
368 Muscovite Thick slab of laminae 6" x 5" x 1" Color: BR
369 Vermiculite Soft, corky like sheets. Color: BR
370 Hemimorphite None
371 Feldspar Crystals.
372 Feldspar Orthoclase common feldspar.
373 Feldspar Albite feldspar.
374 Apatite group (Fluor) Single, terminated yellow crystal.
375 Orthoclase, var. moonstone (Feldspar group) Cligoclase moonstone.
376 Phlogopite Stack of 6-sided sheets. Color: BK
377 Hornblende Paper A. E. Foote label #247. Color: BK
378 Chondrodite None
379 Apophyllite Agate matrix with small cubic crystals. Color: CL
380 Augite (Pyroxene group) Pyroxene sugite.
381 Hornblende Stubby crystal 1" x 1" on calcite matrix. Color: BK
382 Chrysotile Fibrous. Color: GR
383 Tremolite Massive, foliated. Color: WH
384 Orthoclase (Feldspar group) None
385 Apophyllite Cubic crystals on matrix; largest 1/2" x 1/2". Color: CL
386 Lepidolite Massive aggregate of fine plates with crystals of elbaite var.l rubellite on one corner. Color: LV
387 Stilbite None
388 Microcline (Feldspar Group) Var. Amazonite. Color: GR, TN Microcline (Feldspar Group) image
389 Microcline (Feldspar group) Var. Amazonite. Microcline (Feldspar group) image
390 Kyanite Crystal blades in quartz. Color: BL,TN
391 Scapolite (Wernerite) Wernerite was the most common alternate name for the scapolite series, but now it has mostly disappeared from use. A few other names such as mizzonite and dipyre as well as marialite and meionite have been used as names for the entire scapolite series. Now scapolite is a name recognized by most every mineralogist and rock hound the world over.
392 Microcline (Feldspar group) Var. Amazonite.
393 Labradorite (Feldspar group) None
394 Chrysotile None
395 Stilbite None
396 Analcime (Feldspathoid group) None
397 Sepiolite Massive. Color: WH
398 Anorthite (Feldspar group) None
399 Natrolite None
400 Hemimorphite None