David K. Joyce Minerals

Latest Additions

Below are the most recent additions to my specimens database. Click on any of the thumbnails to view a larger image of the specimen.

All prices in Canadian dollars. For payment in US$, deduct 22% or multiply by 0.78.

 

Colliform QuartzGold, Various Localities
  • Item #19236
  • Colliform Quartz
  • 8.0x4.3x2.8 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Bema Gold Exploration Project
  • Kupol
    Siberia, Russia
  • Tiny particles of gold and what I think are unusual sulphosalts and/or tellurides are embedded in this radiating quartz-vein matrix. Unusual mineralization from an unusual location!
Arsenopyrite, FerberiteSulphides, Arsenides, etc. Miscellaneous, Page Four
  • Item #19234
  • Arsenopyrite, Ferberite
  • 6.2x3.9x3.1 cm
  • Largest Crystal Size: 62mm
  • $45.00
  • Yaogangxian Mine
  • Chenzhou
    Hunan, China
  • A very cool, stepped, highly lustrous, well terminated, arsenopyrite crystal propped up by several other crystal sections behind it. As well, there is a sharp but damaged ferberite crystal attached to the back. Displays absolutely perfectly!
Ferberite, CalciteTreasures, Odds and Sods, Various Localities, Page Three
  • Item #19233
  • Ferberite, Calcite
  • 11.1x4.2x3.1 cm
  • Largest Crystal Size: as above
  • $140.00
  • Yaogangxian Mine
  • Chenzhou
    Hunan, China
  • A large, singly terminated ferberite crystal with excellent luster, and nice stria. The back is totally covered with white calcite(or possibly dolomite) crystals. Stunning, heavy crystal!
LibethaniteSecondary Minerals, Various Locations, Page Two
  • Item #19232
  • Libethanite
  • 6.2x4.5x2.7 cm
  • Largest Crystal Size: 1.5mm
  • $65.00
  • Kambove Mine

  • Katanga, Democratic Republic of Congo
  • The top of this specimen is covered with sharp, olive-green liebethinite crystals from this very famous copper mining area of the world. Looks great!
AtacamiteSecondary Minerals, Various Locations
  • Item #19231
  • Atacamite
  • 7.2x6.0x2.1 cm
  • Largest Crystal Size: 8mm
  • $45.00
  • La Farola Mine

  • Copiapo, Chile
  • Deep green, radiating clusters of lustrous atacamite crystals from this classic locality! Such a striking and interesting mineral. Displays very well.
Silver, var. KongsbergiteMorocco, Imiter Mine, Silver
  • Item #19222
  • Silver, var. Kongsbergite
  • 6.9x4.5x1.4 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Imiter Mine
  • Dades
    Morocco
  • A thick plate of the variety of native silver called kongsbergite, because of its high (5%+) mercury content. Imiter Mine has produced very rich kongsbergite like this!
PolybasiteSulphides, Arsenides, etc. Miscellaneous
  • Item #19219
  • Polybasite
  • 5.3x4.9x2.9 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Reyes Mine
  • Guanajuato
    Mexico
  • Not a beautiful specimen until you examine it up close. Some nice crystals and areas of polybasite crystals on this specimen!
Native BismuthCobalt/Gowganda Area -Bismuth
  • Item #19218
  • Native Bismuth
  • 6.6x5.5x2.1 cm
  • Largest Crystal Size: n/a
  • $75.00
  • O'Brien Mine
  • Cobalt
    Canada
  • The top of this specimen is mostly a an exposed vein of native bismuth, about 5mm thick. The bismuth is easily visible due to its brilliant cleavage exposed on the top and is sold bismuth on one side of the specimen, as in the photo. Rich, very good example of native bismuth!
SilverCobalt/Gowganda Area, Ontario -Leaf/Plate Silver Specimens
  • Item #19217
  • Silver
  • 10.0x7.2x4.6 cm
  • Largest Crystal Size: n/a
  • $165.00
  • Green Meehan Mine
  • Cobalt
    Canada
  • A thick plate of crumpled native silver layes across the front of this matrix, holding two rock fragments together. The smaller rock vibrates on one end of the silver if you pluck it like a guitar string. Rich, interesting specimen!
Chlorite, Almandine, Pyrrhotite, etc.Canadian Specimens, Various Localities
  • Item #19215
  • Chlorite, Almandine, Pyrrhotite, etc.
  • 9.5x4.2x1.6 cm
  • Largest Crystal Size: 75mm cleavage
  • $75.00
  • Thompson Mine

  • Manitoba, Canada
  • THIS is a cool specimen! It consists of dark, green, gemmy chlorite cleavage, 75mm across, intermixed with pinkish crystals of almandine garnet and associated with pyrrhotite with some pentlandite and chalcopyrite. Unusual specimen from an amazing nickel-copper mine!
SilverCobalt/Gowganda Area, Ontario -Leaf/Plate Silver Specimens
  • Item #19214
  • Silver
  • 7.5x3.8x0.2 cm
  • Largest Crystal Size: n/a
  • $65.00
  • O'Brien Mine
  • Cobalt
    Ontario, Canada
  • A leaf of thin, bendable, native silver. The silver appears to have crystallized against small calcite crystals and the imprints of them are all over the length of the silver.
Acanthite, ps Argentite, Silver, StephaniteCobalt/Gowganda, Ontario -Various Species
  • Item #19212
  • Acanthite, ps Argentite, Silver, Stephanite
  • 6.5x4.1x3.1 cm
  • Largest Crystal Size: wires-6mm
  • $125.00
  • Keeley Frontier Mine
  • Silver Center
    Ontario, Canada
  • This specimen is mostly solid "argentite" that originally had more calcite associated. Much of the calcite has been removed to reveal wire silver and small stephanite crystals on the acanthite. Great, rich, unusual mineralization that I've only seen occurring at the Keeley Mine!
Silver, Nickeline, BreithauptiteCobalt/Gowganda Area, Ontario -Silver Specimens, Page Four
  • Item #19211
  • Silver, Nickeline, Breithauptite
  • 5.0x4.5x2.5 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Larose Mine
  • Cobalt
    Ontario, Canada
  • A rich specimen of Silver, Nickeline and breithauptite in pinkish dolomite vein gangue. The orange metallic nickeline and pink metallic breithauptite are present as lobular masses intermixed with silver and other arsenides. The Larose mine was one of the first veins discovered in the Cobalt Camp! Rich, interesting and historic!
Native SilverCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #19196
  • Native Silver
  • 7.9x5.3x0.4 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Green- Meehan Mine
  • Cobalt
    Ontario, Canada
  • Rich, tarnished native silver in this rich slice of silver vein. Very little arsenides.
TopazBrazil Minerals, Various
  • Item #19186
  • Topaz
  • 9.2x7.1x4.8 cm
  • Largest Crystal Size: as above
  • $225.00
  • Nova Era
  • Minas Gerais
    Brazil
  • A wonderful,, gemmy topaz crystal with a light green tint. This crystal is actually doubly terminated on the left side while the right is whare it was attached to another crystal. Nice faces! A couple of small dings on the upper right of the termination. Nice crystal from a classic Topaz area!
Proustite, XanthoconiteMorocco, Imiter Mine, Proustite, Xanthoconite, etc.
  • Item #19184
  • Proustite, Xanthoconite
  • 8.1x5.4x4.4 cm
  • Largest Crystal Size: P-2mm
  • $240.00
  • Imiter Mine
  • Djebel Saghro, Ouarzazate
    Morocco
  • Wow! This specimen has a number of cavities that are full of gorgeous, cherry red, lustrous crystals of proustite. The proustite crystals are prismatic with excellent terminations and occur in semi-radiating groups and twinned or single crystals. There are also some superb, sharp xanthoconite crystals as small yellow-orange crystals. It is not hard to see where all of the silver comes from. The quartz matrix is laced with fine native silver and argentiferous galena. Rare minerals that look great!
ErythriteMorocco, Ait Ahmane, Bou Azer, Safflorite, Skutterudite, Gersdorffite
  • Item #19183
  • Erythrite
  • 8.4x5.6x6.2 cm
  • Largest Crystal Size: 6mm
  • $140.00
  • Bou Azer
  • Tazenakht, Ouarzazate, Tafilalet
    Morocco
  • Beautiful, lustrous, intense red erythrite crystals are present in a vug in quartz matrix along with tiny botryoids of pinkish erythrite. The erythrite crystals are very acutely pointed crystals with high luster. From one of the best localities for erythrite crystals!
Brazilianite, AlbiteBrazil Minerals, Various
  • Item #19182
  • Brazilianite, Albite
  • 16.5x6.5x7.3 cm
  • Largest Crystal Size: 16mm
  • $225.00
  • Lonopolis
  • Minas Gerais
    Brazil
  • This specimen of creamy, white, albite crystals has a number of light green, prismatic crystals of brazilianite on it here and there. The brazilianite crystals are fairly gemmy and well-formed, just like you see in magazines and websites! Classic specimen of this phosphate from Brazil!
MalachiteSecondary Minerals, Various Locations
  • Item #19181
  • Malachite
  • 15.5x10.5x5.3 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Diluluwe Mine
  • Kolwezi
    Katanga, Democratic Republic of Congo
  • A beautiful specimen of botryoidal malachite with an encrustation of tiny malachite crystals that make the botryoids sparkle. Add some colour to your display case with this handsome piece!
Barite, CalciteAAA CONNOISSEUR PAGES, Miscellaneous
  • Item #19179
  • Barite, Calcite
  • 15.0x13.0x9.0 cm
  • Largest Crystal Size: 140mm
  • $1,750.00
  • Meikle Mine
  • Elko
    Nevada, USA
  • This is a world class specimen of barite! Several orangey-yellow barite crystals are aesthetically assembled on a bladed calcite crystal base. The crystals are thick-bladed and highly lustrous. The terminations are multiple terminations, as we often see with this group of minerals. The Meikle Mine is famous for large cavities(I'm talking 50-100 feet) lined with these types of calcite and occasional areas of excellent barite crystals, like this. Not a spec of damage! Difficult to find a better specimen!
VanadiniteMorocco, Vanadinite, Mibladen, Tafilalet
  • Item #19177
  • Vanadinite
  • 6.7x4.6x3.0 cm
  • Largest Crystal Size: 3mm
  • $35.00
  • Mibladen
  • Tafilalet
    Morocco
  • This specimen is a matrix of barite totally encrusted with small, well-formed, lustrous red-orange vanadinite crystals. Looks great!
Tetrahedrite, CalcitePeru, Various Minerals and Localities
  • Item #19176
  • Tetrahedrite, Calcite
  • 10.0x8.2x3.5 cm
  • Largest Crystal Size: 15mm
  • $160.00
  • Huaron
    Peru
  • A superb plate of sharp tetrahedrite crystals that totally cover a matrix of sphalerite and pyrite. The tetrahedrite crystals have a coating of preferentially deposited, tiny, white calcite crystals that have formed on just one side of the crystals. Sort of like snow on tree branches. Nice!
Tetrahedrite, QuartzPeru, Various Minerals and Localities
  • Item #19175
  • Tetrahedrite, Quartz
  • 15.5x10.0x5.2 cm
  • Largest Crystal Size: 4mm
  • $75.00
  • Julcani
    Peru
  • The top of this thick plate is covered with hundreds of sharp, tetrahedrite crystals that have crystallized on drusy quartz. Nice crystallized specimen of this ore mineral!
Danburite, BakeriteMexico, Various Minerals and Localities
  • Item #19173
  • Danburite, Bakerite
  • 8.2x5.0x4.3 cm
  • Largest Crystal Size: 40mm
  • $275.00
  • Charcas
  • San Luis Potosi
    Mexico
  • One of the nicest danburite specimens I've seen in a long time! This piece is very aesthetic, showing a row of well formed danburite crystals with a thin botryoidal coating of another borosilicate, the rare bakerite. A striking specimen that displays perfectly!
Bournonite, Quartz, PyritePeru, Various Minerals and Localities
  • Item #19171
  • Bournonite, Quartz, Pyrite
  • 9.0x6.3x4.3 cm
  • Largest Crystal Size: b-8mm
  • $65.00
  • Huaron
    Peru
  • Lots of cyclic-twinned, steely-metallic bournonite crystals on the front of this piece associated with clusters of small white quartz crystals and similarly sized golden pyrite crystals.
JamesoniteSulphides, Arsenides, etc. Miscellaneous, Page Four
  • Item #19152
  • Jamesonite
  • 4.4x4.2x2.8 cm
  • Largest Crystal Size: 2mm
  • $35.00
  • Treore Mine
  • Endillion
    Cornwall, United Kingdom
  • This specimen shows, mostly, jamesonite crystals embedded in carbonate matrix but there are a couple of small vugs showing sharp, acicular, micro crystals of jamesonite. Great old locality!
PectoliteJeffrey Mine, Asbestos, Quebec, Pectolite
  • Item #19151
  • Pectolite
  • 3.3x0.6x0.9 cm
  • Largest Crystal Size: as above
  • $35.00
  • Jeffrey Mine
  • Asbestos
    Quebec, Canada
  • This crystal is a doubly terminated, sharp, waxy-green pectolite crystal from one of the localities that produces the best! Classic Jeffrey Mine.
MolybdeniteSulphides, Arsenides, etc. Miscellaneous
  • Item #19150
  • Molybdenite
  • 5.4x3.7x2.2 cm
  • Largest Crystal Size: 12mm
  • $45.00
  • Aldfield

  • Quebec, Canada
  • This rusty, peridotite matrix has a couple of prismatic, parallel growth molybdenite crystals embedded and well exposed on it. I think it may be repaired but it is not visible. Displays well.
BrookiteBrookite, Magnet Cove, Hot Spring County, Arkansas, USA
  • Item #19149
  • Brookite
  • 5.0x5.5x3.5 cm
  • Largest Crystal Size: 3mm
  • $35.00
  • Magnet Cove
  • Hot Springs
    Arkansas, USA
  • A vug at the top of this quartz matrix is lined with sharp, black crystals of brookite, a titanium oxide mineral. Very nice crystals!
BariteCanadian Specimens, Various Localities
  • Item #19148
  • Barite
  • 4.4x3.5x2.5 cm
  • Largest Crystal Size: 10mm
  • $35.00
  • Aguathuna
  • Port au Port Peninsula
    Newfoundland and Labrador, Canada
  • This cluster of white, tabular barite crystals shows very nice contrasting white zonations on the edges of one of the prism faces. Sweet!
MolybdeniteGrenville Minerals, Various Localities
  • Item #19147
  • Molybdenite
  • 3.5x2.7x1.9 cm
  • Largest Crystal Size: 10mm
  • $35.00
  • Aldfield
    Quebec, Canada
  • A prismatic crystal and a tabular, molybdenite crystal in peridotite matrix from this old classic locality.
SilverCobalt/Gowganda Area, Ontario -Leaf/Plate Silver Specimens
  • Item #19145
  • Silver
  • 5.5x5.1x0.6 cm
  • Largest Crystal Size: n/a
  • $65.00
  • O'Brien Mine
  • Cobalt
    Ontario, Canada
  • A thick plate of pretty-well solid silver from one of the most rich silver mines of the Cobalt Mining Camp. Heavy!
CalciteGrenville, Faraday (Madawaska Mine)
  • Item #19144
  • Calcite
  • 7.7x5.6x5.5 cm
  • Largest Crystal Size: 30mm
  • $80.00
  • Faraday Mine
  • Bancroft
    Ontario, Canada
  • Sharp, clear, colourless calcite scalenohedra are nicely positioned on this matrix composed of tiny quartz and fluorite crystals. Nice specimen from a long-closed mine!
FluororichteriteGrenville Minerals, Various Localities, Page Two
  • Item #19143
  • Fluororichterite
  • 10.8x9.5x7.6 cm
  • Largest Crystal Size: 84mm
  • $150.00
  • Earl Farm
  • Wilberforce
    Ontario, Canada
  • A classic Grenvillian specimen showing sharp fluoro-richterite crystals, a rare qamphibole mineral, embedded in white calcite. Sits perfectly for display.
SilverCobalt/Gowganda Area, Ontario -Crystallized Silver Specimens
  • Item #19142
  • Silver
  • 11.5x9.1x2.2 cm
  • Largest Crystal Size: 20mm
  • $140.00
  • Langis Mine
  • Casey Township
    Ontario, Canada
  • Dendritic, herringbone silver crystals and some veinlets of silver are encased in calcite and exposed nicely in this sawn-one-side specimen Similar crystals shown on rough side. Rich!
ParavauxiteBolivian Minerals, Various
  • Item #19141
  • Paravauxite
  • 10.0x8.1x2.6 cm
  • Largest Crystal Size: 8mm
  • $225.00
  • Siglo xx Mine
  • Llallagua
    Bustillo, Bolivia
  • A plate of greyish quartz that is largely covered on the top with slightly greenish, sharp crystals of paravauxite. Displays very well!
Galena, Sphalerite, PyritePeru, Casapalca Mine
  • Item #19140
  • Galena, Sphalerite, Pyrite
  • 9.9x6.8x3.6 cm
  • Largest Crystal Size: Ga-4mm, Sp-17mm, Py-5mm
  • $45.00
  • Casapalca Mine
  • Huarochiri
    Lima, Peru
  • This thin plate is encrusted with pyrite crystals that have cube-octahedral of galena perched on them in abundance. As well, on one side of the specimen there are two lustrous, complexly twinned sphalerite crystals. Looks great!
WhiteiteYukon Phosphates, Whiteite
  • Item #19130
  • Whiteite
  • 2.4x1.8x1.7 cm
  • Largest Crystal Size: as above
  • $45.00
  • Rapid Creek

  • Yukon, Canada
  • A nice, well formed, twinned whiteite crystal that was attached to lazulite, arrojadite and quartz crystals, some of which are attached to the back. Nice thumbnail-sized crystal!
FluoriteSouth Ontario Limestone Quarries, Fluorite
  • Item #19128
  • Fluorite
  • 6.3x4.9x5.6 cm
  • Largest Crystal Size: 20mm
  • $75.00
  • Flamboro Quarry
  • Wentworth co.
    Ontario, Canada
  • The end of this specimen is a concave area that is part of a fluorite and sphalerite vug. In the vug are sharp, honey-coloured fluorite cubes and a single, well formed, twinned sphalerite crystal. Looks great.
Wulfenite, MimetiteWulfenite, Mimetite, Ojuela Mine, Mapimi, Durango, Mexico
  • Item #19126
  • Wulfenite, Mimetite
  • 10.7x8.9x6.6 cm
  • Largest Crystal Size: Wu 6mm, Mi 2mm
  • $120.00
  • Ojuela Mine
  • Mapimi
    Durango, Mexico
  • A really nice specimen of gossanous limonite encrusted with green, botryoidal mimetite and blocky, creamy-yellow wulfenite crystals. The wulfenite crystals are zoned and very sharp!
Wulfenite, MimetiteWulfenite, Mimetite, Ojuela Mine, Mapimi, Durango, Mexico
  • Item #19125
  • Wulfenite, Mimetite
  • 7.85.6x5.5 cm
  • Largest Crystal Size: W-7mm,M-4mm
  • $85.00
  • Ojuela Mine
  • Mapimi, Durango
    Mexico
  • This a very attractive and interesting specimen of botryoidal, green mimetite with very sharp, pyramidal wulfenite crystals scattered over it. Looks great! Excellent combination of these two minerals.
CopperCopper, Keweenaw Peninsula, Michigan, USA
  • Item #19111
  • Copper
  • 9.7x2.1x0.7 cm
  • Largest Crystal Size: as above
  • $250.00
  • White Pine Mine
  • Ontonagon County
    Michigan, USA
  • This piece is essentially one large, elongated crystal with some smaller crystals attached to one end. Classic Keweenaw Peninsula crystallized copper specimen at a great price!
Azurite, MalachiteMorocco, Sidi Ayed, Fes-Boulemane, Azurite, Malachite
  • Item #19110
  • Azurite, Malachite
  • 11.8x7.0x5.3 cm
  • Largest Crystal Size: 1mm
  • $40.00
  • Sidi Ayed
  • Boulemane
    Morocco
  • This specimen is mostly quartz that is tinted by copper and iron secondary minerals. Most prominent are vugs lined with deep blue azurite crystals and lesser, rounded aggregates of green malachite. Looks great!
RammelsbergiteCobalt/Gowganda, Ontario -Various Species
  • Item #19108
  • Rammelsbergite
  • 18.5x14.2x1.0 cm
  • Largest Crystal Size: n/a
  • $110.00
  • Keeley Mine
  • Cobalt
    Ontario, Canada
  • This is a wonderful slice of vein material, from the South Lorrain area (near Cobalt), that is 2/3 lobular aggregates of rammelsbergite. Analysed. An excellent example of this relatively rare mineral.
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #19107
  • Silver, Arsenides
  • 12.5x10.0x1.0 cm
  • Largest Crystal Size: n/a
  • $325.00
  • Beaver Mine
  • Colbalt Mine
    Ontario, Canada
  • A rather spectacular specimen of high grade silver! The piece was sliced out of a vein of about 70% metallic silver associated with cobalt arsenides and some dolomite. There is a little erythrite which allows me to conclude that the arsenides are cobalt based. Polished one side and rough-cut the other. Reminiscent of the best high grade days!
Lollingite, MagnetiteSulphides, Arsenides, etc. Miscellaneous
  • Item #19105
  • Lollingite, Magnetite
  • 16.6x10.6x4.8 cm
  • Largest Crystal Size: Lo 50mm, Ma 20mm
  • $625.00
  • Huanggang Mine
  • Hexigten
    Ulanhad, China
  • A rather stupendous specimen of some sharp, excellent, bladed lollingite crystals associated with VERY sharp, black magnetite crystals. Actually, it doesn't get much better for either of these species. Approaching "Museum Quality". Displays perfectly!
SilverMorocco, Silver, Bouismas Mine, Bouismas, Bou Azer District, Ouarzazate Province
  • Item #19098
  • Silver
  • 6.8x6.5.6.5 cm
  • Largest Crystal Size: 4mm
  • $240.00
  • Bouismas Mine
  • Bou Azer, Ouarzazate
    Morocco
  • There are a LOT of silver crystals on this piece. Calcite has been removed all around to expose many dendritic branches of silver crystals. I expect when shipped, a few crystals may fall off but there are lots! And you can remove a little more of the calcite with vinegar to reveal even MORE crystals of silver. Looks fantastic!
SilverMorocco, Silver, Bouismas Mine, Bouismas, Bou Azer District, Ouarzazate Province
  • Item #19097
  • Silver
  • 9.6x3.5x4.6 cm
  • Largest Crystal Size: 9mm
  • $225.00
  • Bouismas Mine
  • Bou Azer
    Ourzazate, Morocco
  • Here is a super looking specimen! It sits very nicely for display to show many branching aggregates of sharp silver crystals on the front and the left side. Really a wonderful piece!
SilverMorocco, Silver, Bouismas Mine, Bouismas, Bou Azer District, Ouarzazate Province
  • Item #19096
  • Silver
  • 4.0x2.5x2.0 cm
  • Largest Crystal Size: 5mm
  • $45.00
  • Bouismas Mine
  • Bou Azer
    Ouarzazate, Morocco
  • Sharp, glistening silver crystals are present on the front of this specimen in three dendritic groups.
SilverMorocco, Silver, Bouismas Mine, Bouismas, Bou Azer District, Ouarzazate Province
  • Item #19094
  • Silver
  • 8.6x4.6x3.0 cm
  • Largest Crystal Size: 3mm
  • $85.00
  • Bouismas Mine
  • Bou Azer
    Ouarzazate, Morocco
  • Sharp branches of silver crystals are exposed on the front and back of this specimen from the famous Bouismas mine. Stands well for display