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 18% or multiply by 0.82.

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

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
  • $75.00
  • 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
  • $85.00
  • Red Cloud Mine
  • La Paz Co.
    Arizona, USA
  • OK, it is not 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!
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
  • $90.00
  • 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
  • $55.00
  • 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
WulfeniteSecondary Minerals, Various Locations
  • Item #24678
  • Wulfenite
  • 4.9x2.9x2.6 cm
  • Largest Crystal Size: 7mm
  • $65.00
  • Miess
    Slovenia
  • Thick, crystals of wulfenite showing a small prism face and terminated by pyramids! Different forms and different locality.
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.
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!
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!
Azurite, Chrysocolla, MalachiteSecondary Minerals, Various Locations
  • Item #26811
  • Azurite, Chrysocolla, Malachite
  • 10.0x7.4x6.8 cm
  • Largest Crystal Size: n/a
  • $55.00

  • Zaire
  • The front/top of this dense matrix is covered with botryoidal azurite, which, in turn is largely coated with transluscent crhysocolla. Some of the botryoids are green malachite. Sorry, only locality data I have is Zaire. Interesting piece!
Cuprite, CopperSecondary Minerals, Various Locations
  • Item #26840
  • Cuprite, Copper
  • 4.8x4.6x2.0 cm
  • Largest Crystal Size: 1mm
  • $110.00
  • Cornwall
    England
  • This specimen appears to be a thick cryst of cuprite crystals on a core of native copper, with small copper crystals poking out here and there. The cuprite crystals are sharp cubes with dodecahedral modifications. Nice old-time!!
AtacamiteSecondary Minerals, Various Locations
  • Item #26848
  • Atacamite
  • 9.2x5.6x1.6 cm
  • Largest Crystal Size: 4mm
  • $75.00
  • La Farola Mine
  • Copiapo
    Chile
  • The top of this flat rock matrix is an exposed seam of deep-emerald green atacamite crystals. The crystals are thick-acicular, terminated crystals is single crystals and divergent groups. Gemmy! Excellent!
Malachite, BaryteSecondary Minerals, Various Locations
  • Item #26853
  • Malachite, Baryte
  • 12.3x10.5x8.5 cm
  • Largest Crystal Size: bar-20mm
  • $110.00
  • Mashamba West Mine
  • Katanga
    Dem. Rep. of Congo
  • This specimen is has a matrix of a sort of limonite breccia that is cemented with very thick banded, green malachite that shows botryoidal form in the open spaces. There are very nice, elongated colourless to white baryte crystals formed in a couple of the open spaces. We don't often see baryte crystals in these malachite specimens from Mashamba West! Displays well from a couple of directions!