Displaying 501 - 600 of 40190
Cat. # Name Description
501 Pyrite Three dark (tarnished?0 cubes 1 - 1/4" x 14" 2 - 1/8" x 1/8"
502 Chalcocite Mostly sphalerite with clear "ruby" crystals on one side
503 Hessite None
504 Chalcocite Dark brown massive.
505 Molybdenite None
506 Chalcocite Dark brown massive.
507 Stibnite Steel gray massive.
508 Scheelite Massive, grey.
509 Wolframite (Ferberite) Black, some crystal faces showing.
510 Sphalerite Massive sphalerite on quartz crystals (paper label)
511 Stibnite Prismatic crystals encased in matrix.
512 Graphite None
513 Graphite "Black lead".
514 Graphite None
515 Sulfur None
516 Sulfur Sulfur crystals.
517 Sulfur Massive in matrix.
518 Sulfur Drusy crystals.
519 Pyrrhotite Granular aggregate with chalcopyrite. Color: YL
520 Pyrrhotite Granular aggregate with chalcopyrite. Color: BS
521 Pyrrhotite Massive, granular, bronze tarnishing to gray.
522 Pyrrhotite Massive. Color: YL
523 Wolframite (Ferberite) With Tunctate decomposition.
524 Wolframite (Ferberite) Small, sparkly crystals on matrix.
525 Wolframite (Ferberite) Blades of Ferberite in quartz.
526 Wolframite Massive pyrite with copper crystals.
527 Corundum Rounded (stream worn) rock. Color: TN
528 Corundum Massive, with magnetite known as emery. Color: GY
529 Corundum Massive with magnetite known as emery. Color: BK
530 Kyanite Crystal aggregate. Color: BL
531 Quartz var. Chert Translucent, known as "oriental topaz". Color: GD
532 Chalcopyrite Massive, brass colored on dark matrix (epidote?).
533 Chalcopyrite Small brassy crystals on matrix; small amount of malachite?
534 Chalcopyrite None
535 Chalcopyrite Disseminated throughout matrix, some quartz.
536 Chalcopyrite Massive, brassy color.
537 Marcasite Cockscomb crystals.
538 Arsenopyrite Massive, silver gray, fine granular; (paper label 0).
539 Arsenopyrite Gold, metallic crystals on massive; (color & disintegration more like marcasite FeS2); 1 M & 1 bottle of fragments (disintegrated)
540 Cobaltite Complete Foote label and price. Color: GY
541 Cobaltite Massive; one cut side. Bit of red erythrite coating on uncut side. Color: GY
542 Cobaltite Pyritohedral crystals 1/2' - 3/8".
543 Cuprite Massive, heavy; some malachite. Color: RD-BR
544 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.
545 Tetrahedrite Crystals on quartz matrix; also chalcopyrite crystals
546 Proustite Massive, reddish black; purchased from Foote.
547 Skutterudite Massive; var. smaltite. Color: GY
548 Skutterudite Massive; possible erythrite on one corner. Color: GY-YL
549 Stannite Small, dark gray crystals
550 Franklinite Granules to 3/8" in matrix. Color: BK
551 Joseite Joesite, bismuth, sulfur, tellurium, selineum.
552 Carnallite Undetermined # in bottle.
553 Turquoise Massive; pale blue.
554 Clinochlore None
555 Rhodochrosite None
556 Rhodochrosite Rhodocrosite with calcite on black limestone. Original catalog entry indicates 3 specimens.
557 Rhodochrosite None
558 Rhodochrosite Rhococrosite on calcite.
559 Sodalite None
560 Fluorite None
561 Smithsonite None
562 Vermiculite None
563 Clinochlore Ripidolite, the iron rich variety of clinoclore. Color: GR
564 Clinochlore A chlorite schist with clear, glassy blebs. Color: GR
565 Biotite (Mica group) Small plates of biotite, with calcite and red hematite. Color: BK
566 Muscovite Transparent parallelogram. Color: CL
567 Phlogopite Thick plate. Color: BR, CL Phlogopite image
568 Biotite (Mica group) Dense laminae. Color: BK
569 Muscovite Type of muscovite referred to as plumose. Color: GR
570 Biotite (Mica group) Thin sheet. Color: BK
571 Muscovite Thick slab of laminae 6" x 5" x 1" Color: BR
572 Vermiculite Soft, corky like sheets. Color: BR
573 Hemimorphite None
574 Feldspar Crystals.
575 Feldspar Orthoclase common feldspar.
576 Feldspar Albite feldspar.
577 Staurolite Twinned crystal. Color: BR
578 Apatite group (Fluor) Single, terminated yellow crystal.
579 Orthoclase, var. moonstone (Feldspar group) Cligoclase moonstone.
580 Phlogopite Stack of 6-sided sheets. Color: BK
581 Hornblende Paper A. E. Foote label #247. Color: BK
582 Chondrodite None
583 Apophyllite Agate matrix with small cubic crystals. Color: CL
584 Actinolite (Amphibole group) Aggregate of thin radiating crystals. Color: GR
585 Augite (Pyroxene group) Pyroxene sugite.
586 Hornblende Stubby crystal 1" x 1" on calcite matrix. Color: BK
587 Chrysotile Fibrous. Color: GR
588 Tremolite Massive, foliated. Color: WH
589 Orthoclase (Feldspar group) None
590 Apophyllite Cubic crystals on matrix; largest 1/2" x 1/2". Color: CL
591 Lepidolite Massive aggregate of fine plates with crystals of elbaite var.l rubellite on one corner. Color: LV
592 Stilbite None
593 Microcline (Feldspar Group) Var. Amazonite. Color: GR, TN Microcline (Feldspar Group) image
594 Microcline (Feldspar group) Var. Amazonite. Microcline (Feldspar group) image
595 Kyanite Crystal blades in quartz. Color: BL,TN
596 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.
597 Microcline (Feldspar group) Var. Amazonite.
598 Labradorite (Feldspar group) None
599 Chrysotile None
600 Stilbite None