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 21% or multiply by 0.79.

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!
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
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
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!
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!
ErythriteSecondary Minerals, Various Locations, Page Two
  • Item #22038
  • Erythrite
  • 13.1x8.2x4.5 cm
  • Largest Crystal Size: 3mm
  • $140.00
  • Mt. Cobalt
  • Cloncurry
    Australia
  • This is the richest specimen of erythrite that I have handled. The top of this piece is a thick layer/vein of pink-red acicular/fibrous erythrite crystals. From a famous cobalr-rich mineral system. Looks spectacular. R
PyromorphiteSecondary Minerals, Various Locations, Page Two
  • Item #22155
  • Pyromorphite
  • 8.6x3.7x5.0 cm
  • Largest Crystal Size: 1mm
  • $65.00
  • Phoenixville

  • Pennsylvania, USA
  • The top of this silica-rich rock is covered with pyromorphite crystals, the classic colour of pyromorphite from this old mine. Very old, classic American mining location!
DescloiziteSecondary Minerals, Various Locations, Page Two
  • Item #22200
  • Descloizite
  • 9.3x7.2x6.0 cm
  • Largest Crystal Size: 9mm
  • $110.00
  • Berg Aukas
  • Grootfontein
    Namibia
  • Wow! A heavy cluster of descloizite crystals from the place that arguably produces the best. This cluster of terminated, deep brown crystals its very nicely for display.
Kermesite, Valentinite, AntimonySecondary Minerals, Various Locations, Page Two
  • Item #22193
  • Kermesite, Valentinite, Antimony
  • 1.9x2.2x2.2 cm
  • Largest Crystal Size: k-11mm
  • $65.00
  • Lac Nicolet SB Mine
  • Ham Sud
    Quebec, Canada
  • A cluster of very elongated, acicular kermesite crystals protrudes up out of a matrix of native antimony. The top of the matrix was part of an opening lined with bright, complex, antimony crystals, small clusters of stibnite and excellent valentinite crystals.
AzuriteSecondary Minerals, Various Locations, Page Two
  • Item #22395
  • Azurite
  • 7.0x10.5x6.2 cm
  • Largest Crystal Size: 4mm
  • $120.00

  • China
  • A rather large specimen of botryoidal azurite! If you look at the the undulating carpet of solid azurite closely, you can see that it is composed of thousands of small crystals. Extremely rich. Sorry, don't know the exact locality but probably Chizhou, Anhui copper mining area. R
HemimorphiteSecondary Minerals, Various Locations, Page Two
  • Item #22679
  • Hemimorphite
  • 3.5x3.7x2.5 cm
  • Largest Crystal Size: 3mm
  • $40.00
  • Wolftone Mine
  • Leadville
    Colorado, USA
  • Here is something we don't see very often! This piece has an open vug at the top that contains very sharp, thin-bladed, colourless, gemmy hemimorphite crystals. Nice and unusual!
Anglesite, GalenaSecondary Minerals, Various Locations, Page Two
  • Item #22736
  • Anglesite, Galena
  • 4.4x2.3x2.2 cm
  • Largest Crystal Size: 6mm
  • $45.00
  • Freiberg
  • Saxony
    Germany
  • This specimen is mostly composed of clear, colourless anglesite crystals in numerous vugs and openings with a little relict galena here and there. Sharp crystals from a famous, old locality!