Displaying 501 - 600 of 40276
Cat. # Name Description
501 Stibnite Steel gray massive.
502 Scheelite Massive, grey.
503 Wolframite (Ferberite) Black, some crystal faces showing.
504 Sphalerite Massive sphalerite on quartz crystals (paper label)
505 Stibnite Prismatic crystals encased in matrix.
506 Graphite None
507 Graphite "Black lead".
508 Graphite None
509 Sulfur None
510 Sulfur Sulfur crystals.
511 Sulfur Massive in matrix.
512 Sulfur Drusy crystals.
513 Pyrrhotite Granular aggregate with chalcopyrite. Color: YL
514 Pyrrhotite Granular aggregate with chalcopyrite. Color: BS
515 Pyrrhotite Massive, granular, bronze tarnishing to gray.
516 Pyrrhotite Massive. Color: YL
517 Wolframite (Ferberite) With Tunctate decomposition.
518 Wolframite (Ferberite) Small, sparkly crystals on matrix.
519 Wolframite (Ferberite) Blades of Ferberite in quartz.
520 Wolframite Massive pyrite with copper crystals.
521 Corundum Rounded (stream worn) rock. Color: TN
522 Corundum Massive, with magnetite known as emery. Color: GY
523 Corundum Massive with magnetite known as emery. Color: BK
524 Kyanite Crystal aggregate. Color: BL
525 Quartz var. Chert Translucent, known as "oriental topaz". Color: GD
526 Chalcopyrite Massive, brass colored on dark matrix (epidote?).
527 Chalcopyrite Small brassy crystals on matrix; small amount of malachite?
528 Chalcopyrite None
529 Chalcopyrite Disseminated throughout matrix, some quartz.
530 Chalcopyrite Massive, brassy color.
531 Marcasite Cockscomb crystals.
532 Arsenopyrite Massive, silver gray, fine granular; (paper label 0).
533 Arsenopyrite Gold, metallic crystals on massive; (color & disintegration more like marcasite FeS2); 1 M & 1 bottle of fragments (disintegrated)
534 Cobaltite Complete Foote label and price. Color: GY
535 Cobaltite Massive; one cut side. Bit of red erythrite coating on uncut side. Color: GY
536 Cobaltite Pyritohedral crystals 1/2' - 3/8".
537 Cuprite Massive, heavy; some malachite. Color: RD-BR
538 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.
539 Tetrahedrite Crystals on quartz matrix; also chalcopyrite crystals
540 Proustite Massive, reddish black; purchased from Foote.
541 Skutterudite Massive; var. smaltite. Color: GY
542 Skutterudite Massive; possible erythrite on one corner. Color: GY-YL
543 Stannite Small, dark gray crystals
544 Franklinite Granules to 3/8" in matrix. Color: BK
545 Joseite Joesite, bismuth, sulfur, tellurium, selineum.
546 Carnallite Undetermined # in bottle.
547 Turquoise Massive; pale blue.
548 Clinochlore None
549 Rhodochrosite None
550 Rhodochrosite Rhodocrosite with calcite on black limestone. Original catalog entry indicates 3 specimens.
551 Rhodochrosite None
552 Rhodochrosite Rhococrosite on calcite.
553 Sodalite None
554 Fluorite None
555 Smithsonite None
556 Vermiculite None
557 Clinochlore Ripidolite, the iron rich variety of clinoclore. Color: GR
558 Clinochlore A chlorite schist with clear, glassy blebs. Color: GR
559 Biotite (Mica group) Small plates of biotite, with calcite and red hematite. Color: BK
560 Muscovite Transparent parallelogram. Color: CL
561 Phlogopite Thick plate. Color: BR, CL Phlogopite image
562 Biotite (Mica group) Dense laminae. Color: BK
563 Muscovite Type of muscovite referred to as plumose. Color: GR
564 Biotite (Mica group) Thin sheet. Color: BK
565 Muscovite Thick slab of laminae 6" x 5" x 1" Color: BR
566 Vermiculite Soft, corky like sheets. Color: BR
567 Hemimorphite None
568 Feldspar Crystals.
569 Feldspar Orthoclase common feldspar.
570 Feldspar Albite feldspar.
571 Staurolite Twinned crystal. Color: BR
572 Apatite group (Fluor) Single, terminated yellow crystal.
573 Orthoclase, var. moonstone (Feldspar group) Cligoclase moonstone.
574 Phlogopite Stack of 6-sided sheets. Color: BK
575 Hornblende Paper A. E. Foote label #247. Color: BK
576 Chondrodite None
577 Apophyllite Agate matrix with small cubic crystals. Color: CL
578 Actinolite (Amphibole group) Aggregate of thin radiating crystals. Color: GR
579 Augite (Pyroxene group) Pyroxene sugite.
580 Hornblende Stubby crystal 1" x 1" on calcite matrix. Color: BK
581 Chrysotile Fibrous. Color: GR
582 Tremolite Massive, foliated. Color: WH
583 Orthoclase (Feldspar group) None
584 Apophyllite Cubic crystals on matrix; largest 1/2" x 1/2". Color: CL
585 Lepidolite Massive aggregate of fine plates with crystals of elbaite var.l rubellite on one corner. Color: LV
586 Stilbite None
587 Microcline (Feldspar Group) Var. Amazonite. Color: GR, TN Microcline (Feldspar Group) image
588 Microcline (Feldspar group) Var. Amazonite. Microcline (Feldspar group) image
589 Kyanite Crystal blades in quartz. Color: BL,TN
590 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.
591 Microcline (Feldspar group) Var. Amazonite.
592 Labradorite (Feldspar group) None
593 Chrysotile None
594 Stilbite None
595 Analcime (Feldspathoid group) None
596 Sepiolite Massive. Color: WH
597 Anorthite (Feldspar group) None
598 Natrolite None
599 Hemimorphite None
600 Chondrodite None