David K. Joyce

Secondary Minerals, Various Locations

Secondary minerals are thos that form from the decomposition of primary minerals due to the action of water, oxygen and other weathering agents. For example, the upper parts of copper sulphide deposits usually react with oxygen to alter primary copper sulphides into copper oxides, carbonates and sulphates. These latter minerals are secondary minerals. Here are some great examples!

All prices in Canadian dollars. For payment in US$, deduct 24% or multiply by 0.76.

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

PyromorphiteSecondary Minerals, Various Locations
  • Item #12872
  • Pyromorphite
  • 9.3x7.0x6.5 cm
  • Largest Crystal Size: 12mm
  • $60.00
  • Ems

  • Germany
  • A few brownish pyromorphite crystals are scattered on the top of this sandstone matrix. Most of the crystals are damaged, however. I've put it on the site since it is a unique, classic locality. Looks good, regardless!
ParatacamiteSecondary Minerals, Various Locations
  • Item #13373
  • Paratacamite
  • 8.6x4.4x2.0 cm
  • Largest Crystal Size: 1mm
  • $55.00
  • San Francisco Mine
  • Sierra Gorda
    Chile
  • Excellent, sharp, dark green crystals of paratacamite are scattered, in clusters, across the top of this specimen. Excellent!
MalachiteSecondary Minerals, Various Locations
  • Item #14414
  • Malachite
  • 10.5x8.0x6.5 cm
  • Largest Crystal Size: 2mm
  • $65.00
  • Etoile de Congo Mine
  • Katanga
    Democratic Republic of Congo
  • This specimen is kind of a hollow geode of deep green malachite embedded in a lighter coloured matrix. The interior of the geode is lined with small, sparkling crystals of malachite and they are set on a rind of solid malachite about 5mm thick. Great looking specimen from a classic locality.
CupriteSecondary Minerals, Various Locations
  • Item #20296
  • Cuprite
  • 7.1x6.3x2.4 cm
  • Largest Crystal Size: 2mm
  • $75.00
  • Sepon Mine
  • Vilabouly, Savannakhet
    Laos
  • Lots of gemmy, red cuprite crystals line vugs in goethite/gossan matrix. Lots to look at!
KermesiteSecondary Minerals, Various Locations
  • Item #20299
  • Kermesite
  • 7.1x4.9x5.6 cm
  • Largest Crystal Size: 6mm
  • $85.00
  • Dafeng
  • Shanlin Co., Guanxi
    Zhuang, China
  • Lots of divergent, tufts of red kermesite are exposed on this fracture. Rich, instructive specimen of this unusual mineral.
KermesiteSecondary Minerals, Various Locations
  • Item #20301
  • Kermesite
  • 9.2x6.0x4.9 cm
  • Largest Crystal Size: 14mm
  • $120.00
  • Dafeng
  • Shanlin Co., Guanxi
    Zhuang, China
  • A very rich, showy specimen of deep-red, acicular kermesite, exposed on a fracture across the front of this piece. Wow!
SmithsoniteSecondary Minerals, Various Locations
  • Item #20335
  • Smithsonite
  • 7.3x5.0x3.4 cm
  • Largest Crystal Size: n/a
  • $65.00
  • San Antonio Mine
  • Santa Eulalia, Chihuahua
    Mexico
  • A plate of luscious, grey but lustrous smithsonite from this famous old locality. Might even look better if it was standing vertically instead of horizontally.
Azurite, MalachiteSecondary Minerals, Various Locations
  • Item #20761
  • Azurite, Malachite
  • 2.7x2.2x1.7 cm
  • Largest Crystal Size: 7mm
  • $55.00
  • Copper Queen Shaft
  • Bisbee, Cochise County
    Arizona, USA
  • A very nice specimen showing a cluster of deep blue azurite crystals associated with fibrous malachite. The Copper Queen Mine was a large famous copper mine at Bisbee and is well known for azurite specimens.
WulfeniteSecondary Minerals, Various Locations
  • Item #20935
  • Wulfenite
  • 9.1x6.9x8.0 cm
  • Largest Crystal Size: 6mm
  • $140.00
  • Red Cloud Mine
  • La Paz Co.
    Arizona, USA
  • OK, it is nor a "screamer" like we see in the Mineralogical Record but it is a very nice wulfenite specimen with the characteristic deep red, tabular crystals that we love from the Red Cloud Mine. A couple are bruised but most are just fine!
AnnabergiteSecondary Minerals, Various Locations
  • Item #21171
  • Annabergite
  • 4.0x3.3x3.5 cm
  • Largest Crystal Size: 2mm
  • $80.00
  • Laurium

  • Greece
  • The vuggy area at the top of this piece has many sprays of deep-emerald green annabergite in it. The matrix appears to have some silvery arsenide mineral specs in it which may be the source of the nickel for the annabergite. Beautiful specimen from a classic, ancient locality!
DescloiziteSecondary Minerals, Various Locations
  • Item #21251
  • Descloizite
  • 9.7x8.5x5.5 cm
  • Largest Crystal Size: 13mm
  • $160.00
  • Berg Aukas
  • Grootfontein
    Namibia
  • A superb, cabinet specimen of this beautiful secondary Pg-Zn-V mineral from the locality that had produced some of the best specimens! The piece is mostly descloizite in the base with some iron oxides and the top is covered with spiky, lustrous descloizite crystals. Displays perfectly! R
MalachiteSecondary Minerals, Various Locations
  • Item #21826
  • Malachite
  • 12.5x13.5x8.0 cm
  • Largest Crystal Size: n/a
  • $125.00
  • Mashamba West Mine
  • Kolwezi, Katanga
    Democratic Republic of Congo
  • This specimen is essentially a malachite cementing of gossan/rock fragments. Mostly malachite! There are two cavities in the malachite. The best one shows a number of weirdly-shaped stalactitic malachite forms that are partially covered with small malachite crystals. Beautiful!
DescloiziteSecondary Minerals, Various Locations
  • Item #22109
  • Descloizite
  • 9.7x6.1x4.2 cm
  • Largest Crystal Size: 10mm
  • $120.00
  • Berg Aukas
  • Grootfontein
    Namibia
  • A gorgeous cluster of this beautiful lead-zinc vanadinate. It is composed of lustrous, brown, pointy crystals all over the top of this specimen which is mostly composed of interlocking descloizite with just a little iron oxide. Excellent!
DescloiziteSecondary Minerals, Various Locations
  • Item #22110
  • Descloizite
  • 9.4x7.4x4.5 cm
  • Largest Crystal Size: 11mm
  • $120.00
  • Berg Aukas
  • Grootfontein
    Namibia
  • Sparkling, lustrous crystals of resinous, brown descloizite totally line two concave areas on the top of this matrix of mostly interlocked descloizite crystals. Lots of small crystals on the bottom, as well. Looks great!
Pyromorphite, BaryteSecondary Minerals, Various Locations
  • Item #22220
  • Pyromorphite, Baryte
  • 6.5x4.2x2.5 cm
  • Largest Crystal Size: 7mm
  • $85.00
  • Les Farges
  • Correze
    France
  • The pyromorphite specimens from Les Farges have been featured in textbooks for many many decades.Not perfect but lots of great crystals. A French Classic and very good example of this mineral. r
LibetheniteSecondary Minerals, Various Locations
  • Item #22709
  • Libethenite
  • 4.2x4.3x2.3 cm
  • Largest Crystal Size: 7mm
  • $40.00
  • Mindola Open Pit
  • Nkana Mine, Kitwe
    Zambia
  • The top of this specimen is part of a cavity that contains two very sharp, well formed libethenite crystals. A classic locality for this mineral.
Stibiconite, ps stibniteSecondary Minerals, Various Locations
  • Item #22842
  • Stibiconite, ps stibnite
  • 14.2x3.1x2.7 cm
  • Largest Crystal Size: as above
  • $110.00
  • Catorce
  • San Luis Potosi
    Mexico
  • A classic pseudomorph of stibiconite after stibnite. The striations and form of the original stibnite crystal have been faithfully preserved in this very good example. Some small quartz crystals attached. Nice example! R
MalachiteSecondary Minerals, Various Locations
  • Item #24424
  • Malachite
  • 6.7x4.6x4.3 cm
  • Largest Crystal Size: 2mm
  • $45.00
  • Etoile de Congo Mine
  • Katanga Province
    Zaire
  • Openings in this dark gossanous matrix are totally lined with emerald green tufts of acicular malachite. Beautiful example of this copper mineral.
VanadiniteSecondary Minerals, Various Locations
  • Item #24619
  • Vanadinite
  • 8.0X4.9X5.4 cm
  • Largest Crystal Size: 2mm
  • $45.00
  • Chihuahua

  • Mexico
  • Lots of elongated crystals of well-terminated, hexagonal vanadinite crystals scattered about this piece. The matrix is largely a cluster of rhombohedral, white calcite crystals. Nice example! s
AzuriteSecondary Minerals, Various Locations
  • Item #24948
  • Azurite
  • 7.2x4.4x4.8 cm
  • Largest Crystal Size: 3mm
  • $45.00
  • Juanita Mine
  • Kelly, Socorro Co.
    New Mexico, USA
  • Some nice azurite crystals in cavities with other copper minerals from this famous mining area.
ScholziteSecondary Minerals, Various Locations
  • Item #25073
  • Scholzite
  • 6.8x5.8x4.4 cm
  • Largest Crystal Size: 8mm
  • $75.00
  • Reaphook Hill Zinc Mine
  • Flinders Range
    South Australia, Australia
  • Loads of acicular scholzite crystals scattered around the vug on the front of this limonite matrix. The crystals are colourless with good coverage.
Azurite, Malachite, GalenaSecondary Minerals, Various Locations
  • Item #25977
  • Azurite, Malachite, Galena
  • 2.7x2.4x2.1 cm
  • Largest Crystal Size: 0.5
  • $45.00
  • Sherman Tunnel Mine
  • Leadville
    Colorado, USA
  • A cavity in this heavily oxidized ore is lined with small azurite crystals and rounded knobs of malachite. There are small quartz crystals around and some small cerussite crystals. Nice specimen from an unusual location!
Pyromorphite, QuartzSecondary Minerals, Various Locations
  • Item #26456
  • Pyromorphite, Quartz
  • 3.7x3.0x3.6 cm
  • Largest Crystal Size: 1mm
  • $40.00
  • Susanna Mine
  • Leadhills
    Scotland
  • Corroded quartz matrix with many cavities containing pyromorphite crystals. The crystals are fairly acicular and range in colour from yellow to bright green. from an old classic locality.
Linarite, Quartz, MalachiteSecondary Minerals, Various Locations
  • Item #26472
  • Linarite, Quartz, Malachite
  • 4.1x3.3x2.4 cm
  • Largest Crystal Size: 2mm
  • $40.00
  • Blanchard Mine
  • Bingham, Socorro County
    New Mexico, USA
  • This vuggy quartz matrix has open areas lined with quartz crystals that have deep-blue, gemmy, linarite crystals on them there and there. As well, there are tufts of green malachite scattered about. Nice specimen of these copper minerals!
Scorodite, Carminite, QuartzSecondary Minerals, Various Locations
  • Item #26480
  • Scorodite, Carminite, Quartz
  • 4.7x3.1x3.8 cm
  • Largest Crystal Size: 0.5mm
  • $40.00
  • Tooele County
    Utah, USA
  • A very nice vug of sparkling, peculiar-green scorodite crystals on quartz crystals. Elsewhere on the specimnen there is a coating of tiny red-brown crystals on or with the scorodite that is the carminite. Clusters of crystals of a beige unknown mineral, as well! Old type-written label accompanies it that simply states, "Old Gold Mine, Tooele Co., Utah".
Adamite, var. cuprianSecondary Minerals, Various Locations
  • Item #26495
  • Adamite, var. cuprian
  • 4.7x4.4x3.8 cm
  • Largest Crystal Size: 1.5mm
  • $55.00
  • Lavrion

  • Greece
  • Lots of vugs in this gossan matrix are lined with very bright green copper-rich adamite crystals and small balls of crystals of a mineral that I'll assume is austinite, although I don't really know. Beautiful!
TarbuttiteSecondary Minerals, Various Locations
  • Item #26521
  • Tarbuttite
  • 4.2x3.0x1.7 cm
  • Largest Crystal Size: 3mm
  • $40.00
  • Broken Hill
  • Kabwe
    Zambia
  • A mound of colourless tarbuttite crystals given a brownish tinge by iron oxides under and between crystals. Some bruising. Great locality piece!
AtacamiteSecondary Minerals, Various Locations
  • Item #26535
  • Atacamite
  • 3.9x2.1x1.8 cm
  • Largest Crystal Size: 4mm
  • $65.00
  • Chuquicamata Mine
  • Antofagasta
    Chile
  • Actually, excellent, thick, compound crystals of this secondary copper mineral. We don't see nice atacamite crystals like this very often! AND from what I believe is THE largest copper mine in the world!
Cuprite, MalachiteSecondary Minerals, Various Locations
  • Item #26629
  • Cuprite, Malachite
  • 2.9x1.9x1.8 cm
  • Largest Crystal Size: 19mm
  • $150.00
  • Onganja
  • Windhoek
    Namibia
  • A superb example of a classic association from Onganja Mine; malachite-coated cuprite crystals. Shar isometric forms define the two cuprite crystals that have a thin veneer of malachite, perhaps a fraction of a mm thick. Classic!
DioptaseSecondary Minerals, Various Locations
  • Item #26631
  • Dioptase
  • 9.7x5.0x3.9 cm
  • Largest Crystal Size: 6mm
  • $160.00
  • Mindouli

  • Democratic Republic of Congo
  • This specimen is mostly dioptase that has largely filled the space between breccia fragments. There is a nice vug in the thickedt part of the filling that is lined with deep, emerald green-blue, lustrous crystals of dioptase. It has an acrylic block attached to the back to assist it in standing vertically but it can be removed easily for horizontal display. Knocks your eyes out!
MalachiteSecondary Minerals, Various Locations
  • Item #26637
  • Malachite
  • 5.7x3.9x3.3 cm
  • Largest Crystal Size: 1mm
  • $45.00
  • Kolwezi
  • Shaba
    Zaire
  • A round, almost spherical botryoid of malachite crystals on banded malachite from the great copper mining area in Zaire! Beautiful!
PyromorphiteSecondary Minerals, Various Locations
  • Item #26706
  • Pyromorphite
  • 9.0x7.0x4.0 cm
  • Largest Crystal Size: 2.5mm
  • $140.00
  • Roughton Gill
  • Caldbeck Fells, Cumbria
    England
  • The front of this quartzite matrix is totally covered with yellow, sharp, prismatic vanadinite crystals. Excellent example from this very old, classic English locality!