David K. Joyce

Secondary Minerals, Various Locations, Page Two

Here are more interesting minerals from the oxidized zones!

All prices in Canadian dollars. For payment in US$, deduct 19% or multiply by 0.81.

Click on any of the following thumbnails to view a larger image of the specimen.

DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13500
  • Descloizite
  • 2.1x1.4x1.8 cm
  • Largest Crystal Size: 10mm
  • $35.00
  • Grootfontain
    Namibia
  • A lustrous cluster of deep brown descloizite crystals. Looks great! Very sharp!
Descloizite, CalciteSecondary Minerals, Various Locations, Page Two
  • Item #13511
  • Descloizite, Calcite
  • 12.5x8.0x5.5 cm
  • Largest Crystal Size: 10mm
  • $245.00
  • Grootfontein

  • Namibia
  • A rather spectacular specimen of descloizite showing two very different habits on the same specimen. On one side, the crystals are deep-brown and very lustrous, while on the other side the crystals are a lighter brown and larger in size. The piece is capped with iron stained, rounded calcite crystals. The old label that accompanies the specimen identifies the locality as "Grootfontein, S.W.Africa". Beautiful and impressive.
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13508
  • Descloizite
  • 4.4x3.4x2.3 cm
  • Largest Crystal Size: 4mm
  • $40.00
  • Grootfontein
    Namibia
  • A cluster of dark-brown descloizite crystals with good luster. The cluster has two protuberances of crystals which give it an interesting appearance!
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13505
  • Descloizite
  • 4.5x4.4x2.1 cm
  • Largest Crystal Size: 8mm
  • $40.00
  • Grootfontein
    Namibia
  • This is really two specimens in one! On one side, the piece is covered with deep-brown, lustrous, sparkling descloizite crystals. The other side has many larger, lighter brown descloizite crystals of a different habit -more wedge-shaped.
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13502
  • Descloizite
  • 3.2x3.2x2.2 cm
  • Largest Crystal Size: 9mm
  • $40.00
  • Grootfontein
    Namibia
  • A mound of very lustrous, sharp descloizite crystals up to 10mm or so in length.
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13503
  • Descloizite
  • 3.7x2.9x2.0 cm
  • Largest Crystal Size: 5mm
  • $35.00
  • Grootfontein
    Namibia
  • A lustrous mound of rich-brown descloizite crystals. Nice crystals!
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #13390
  • Descloizite
  • 4.7x3.8x0.9 cm
  • Largest Crystal Size: as above
  • $45.00
  • Berg Aukas
  • Grootfontein
    Namibia
  • This specimen is a twinned group of descloizite crystals in a tree-like habit. The very tip of the group is missing but the rest of the crystals are intact. Very nice example!
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #10581
  • Descloizite
  • 3.9x3.2x2.2 cm
  • Largest Crystal Size: 8mm
  • $75.00
  • Groofontein

  • Namibia
  • Well formed, blunt, almost cubic crystals of descloizite from the famous. Grootfontein area. That is all of the locality info that I have. The crystals have a good lustre and are associated with many unidentified 1mm white, hexagonal crystals (calcite? cerussite?...). Nice!
Botryogen, CopiapiteSecondary Minerals, Various Locations, Page Two
  • Item #10693
  • Botryogen, Copiapite
  • 6.4x5.7x2.5 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Quetena

  • Chile
  • A 2.0cm seam of orange botryogen cuts right through this matrix. It appears that the matrix has been fractured and the fractures filled with light blue-green copiapite. Very nice piece!
Botryogen, CopiapiteSecondary Minerals, Various Locations, Page Two
  • Item #10698
  • Botryogen, Copiapite
  • 10.7x6.5x5.5 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Quetena

  • Chile
  • The top of this piece is covered by an open seam of orange botryogen. There are little bits of copiapite in the sample, as well as an unknown white mineral. Excellent specimen!
WulfeniteSecondary Minerals, Various Locations, Page Two
  • Item #16936
  • Wulfenite
  • 3.2x2.9x1.5 cm
  • Largest Crystal Size: 14mm
  • $40.00
  • 79 Mine
  • Gila Co.
    Arizona, USA
  • Paper-thin, bright yellow, wulfenite crystals make up this specimen. The cluster is a flower-like arrangement of the paper-thin crystals. Sweet!
Wulfenite, MimetiteSecondary Minerals, Various Locations, Page Two
  • Item #16920
  • Wulfenite, Mimetite
  • 3.1x2.6x1.7 cm
  • Largest Crystal Size: 15mm
  • $45.00
  • San Francisco Mine
  • Sonora
    Mexico
  • Really nice cluster of tallow-orange, thin-platy wulfenite crystals held together by fine botryoidal mimetite. The crystals are very interesting and show square cross section with beveled edges. One crystal is a sort of L-shaped with a curved, beveled face. Unique!
Smithsonite, CalciteSecondary Minerals, Various Locations, Page Two
  • Item #20077
  • Smithsonite, Calcite
  • 8.8x6.1x2.3 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Choix
  • Sinaloa
    Mexico
  • A lovely plate of botryoidal, pinkish smithsonite with relict calcite blebs on it. Nice luster! Looks great! t
SmithsoniteSecondary Minerals, Various Locations, Page Two
  • Item #20081
  • Smithsonite
  • 6.0x5.2x4.2 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Santa Amita Mine
  • Choix
    Sinaloa, Mexico
  • An attractive botryoidal mound of green-blue smithsonite crystals. on skeletal smithsonite matrix. Great-looking specimen. t
Malachite, Cerussite, PyromorphiteSecondary Minerals, Various Locations, Page Two
  • Item #20095
  • Malachite, Cerussite, Pyromorphite
  • 7.5x7.1x3.5 cm
  • Largest Crystal Size: Ma 12mm
  • $85.00
  • Brown's Prospect
  • Rum Jungle
    Northern Territory, Australia
  • A plate of botryoidal malachite on pyromorphite garnished with small crystals of cerussite. Interesting paragenesis and a good looking piece! t
Kermesite, CalciteSecondary Minerals, Various Locations, Page Two
  • Item #20267
  • Kermesite, Calcite
  • 11.5x8.0x8.4 cm
  • Largest Crystal Size: 35mm
  • $240.00
  • Dafeng
  • Shanlin Co., Guanxi, Zhuang
    China
  • A number of sprays of cherry-red, acicular, free-standing kermesite crystals are exposed in a narrow, drusy calcite crystal-lined seam on the front of this matrix. Unusual and different locality for this relatively rare mineral.
PyromorphiteSecondary Minerals, Various Locations, Page Two
  • Item #20647
  • Pyromorphite
  • 4.2x2.9x2.5 cm
  • Largest Crystal Size: 13mm
  • $65.00
  • Yangshuo Mine
  • Guanxi
    China
  • An aesthetic cluster of light green pyromorphite crystals from this mine. The crystals are unusual in that they have divergent crystals protruding from a main crystal. Have a look! Very interesting and good-looking! t
PyromorphiteSecondary Minerals, Various Locations, Page Two
  • Item #20648
  • Pyromorphite
  • 8.0x4.4x2.6 cm
  • Largest Crystal Size: 5mm
  • $120.00
  • Asprieres, Decazeuilie
  • Aveyron, Midi-Pyrenees
    France
  • The top of this plate is covered with very green, rounded crystals of pyromorphite, The crystals are sharp crystals, though, just more like British "campylite" in form. Colourful, excellent specimen! t
StibiconiteSecondary Minerals, Various Locations, Page Two
  • Item #21189
  • Stibiconite
  • 13.3x2.6x2.5 cm
  • Largest Crystal Size: as above
  • $120.00
  • Catorce
  • San Luis Potosi
    Mexico
  • A superb, superb pseudomorph. This former stibnite crystal appears to have been totally replaced by stibiconite. It has an extremely sharp termination and the stria on the prism faces have been faithfully preserved. There is also a thin veneer of crystallized calcite on parts of the crystal. Classic! Excellent!
Azurite, MalachiteSecondary Minerals, Various Locations, Page Two
  • Item #21277
  • Azurite, Malachite
  • 14.5x12.3x5.7 cm
  • Largest Crystal Size: 5mm
  • $425.00
  • Liufengshan Mine
  • Anhui
    China
  • An amazing, great-looking example of copper mineralization! The matrix is, essentially, porous, botryoidal, dark-green malachite in which all of the cavities are lined with lustrous, blue, razor-sharp crystals of azurite. Partially sawn base. This is a large cabinet specimen that looks great. R
Azurite,  Chalcoalumite Secondary Minerals, Various Locations, Page Two
  • Item #21440
  • Azurite, Chalcoalumite
  • 7.0x5.6x5.0 cm
  • Largest Crystal Size: 1mm
  • $225.00
  • Bisbee
  • Cochise County
    Arizona, USA
  • A very rich specimen of azurite with many of the cavities lined with lustrous, botryoidal azurite with the botryoids covered with 1mm crystals of the deep blue mineral. Some of the other openings are lined with light blue, porcelainous botryoidal chalcoalumite composed of radiating crystals. Excellent example of this classic Bisbee association! R
VanadiniteSecondary Minerals, Various Locations, Page Two
  • Item #21595
  • Vanadinite
  • 5.1x3.1x2.2 cm
  • Largest Crystal Size: 6mm
  • $75.00
  • J.C. Holmes Claim
  • Patagonia
    Arizona, USA
  • Vibrant-orange-red vanadinite crystals cover much of this fragment of rock, probably a breccia fragment, originally. The crystals are hexagonal prisms with prominent pyramidal faces. Nice!
LibetheniteSecondary Minerals, Various Locations, Page Two
  • Item #21923
  • Libethenite
  • 5.0x3.0x0.9 cm
  • Largest Crystal Size: micro
  • $35.00
  • Staustell
  • Cornwall
    England
  • The top of this plate of granite is covered by, sharp, deep-green crystals of libethenite. Classic old locality!
OliveniteSecondary Minerals, Various Locations, Page Two
  • Item #21974
  • Olivenite
  • 4.3x4.5x3.6 cm
  • Largest Crystal Size: 1.5mm
  • $65.00
  • Wheal Gorland
  • St. Day, Cornwall
    England
  • A vug at the front of this quartz matrix is totally lined with deep, forest green olivenite crystals. Actually, there are a number of other smaller openings, as well, in the quartz, with olivenite crystals. Classic locality!
Leadhillite, Linarite, CerussiteSecondary Minerals, Various Locations, Page Two
  • Item #21978
  • Leadhillite, Linarite, Cerussite
  • 3.3x3.1x2.6 cm
  • Largest Crystal Size: micro
  • $75.00
  • Beaver Claim
  • Slocan
    British Columbia, Canada
  • A very nice leadhillite crystal sits amongst linarite and cerussite crystals in this gossan matrix. The leadhillite crystal is a nice one, albeit small. Great association piece from an unusual location.