David K. Joyce

Franklin, New Jersey, Various specimens

The Zinc mines at Franklin New Jersey are a unique geological environment and have produced hundreds of different minerals, including many new to science. Probably the most famous aspect of the minerals from Franklin are the fluorescent minerals. Fantastic! Here are some rare and rich examples!

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.

Willemite, Calcite, AndraditeFranklin, New Jersey, Various specimens
  • Item #17781
  • Willemite, Calcite, Andradite
  • 9.3x7.4x4.5 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Franklin

  • New Jersey, USA
  • An interesting geological as well as mineralogical. This specimen appears to show concentric layers or rings of alteration or deposition around a core of, possibly, a pyroxene group mineral. The outermost layers are calcite and willemite that fluoresce well.
WillemiteFranklin, New Jersey, Various specimens
  • Item #17787
  • Willemite
  • 12.1x9.2x6.4 cm
  • Largest Crystal Size: n/a
  • $120.00
  • Franklin

  • New Jersey, Canada
  • A very large piece of high-grade willemite with a little franklinite and veins of an unidentified white mineral. Looks amazing!!
WillemiteFranklin, New Jersey, Various specimens
  • Item #17768
  • Willemite
  • 5.3x4.1x2.5 cm
  • Largest Crystal Size: n/a
  • $40.00
  • Franklin

  • New Jersey, USA
  • Bright green fluorescent willemite makes for an excellent example of this zinc ore from the famous mine at Franklin, New Jersey.
Zincite, WillemiteFranklin, New Jersey, Various specimens
  • Item #17789
  • Zincite, Willemite
  • 8.6x4.1x1.5 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Franklin

  • New Jersey, USA
  • I thought that this piece was a solid orangey zincite but the closer that I look, it appears to be mostly zincite with a fine grain mist of willemite throughout it's volume. I have learned that Franklin old-timers called this varietal combination "Sussexite" or calcio-zincite. Interesting and different!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17767
  • Willemite, Franklinite
  • 6.1x5.7x2.4 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Franklin

  • New Jersey, USA
  • Large, crystal sections of willemite fluoresce bright green and are associated with similarly sized franklinite crystals. Brilliant!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17765
  • Willemite, Franklinite
  • 4.3x4.1x3.5 cm
  • Largest Crystal Size: 34mm
  • $75.00
  • Franklin

  • New Jersey, USA
  • A large, rather malformed willemite crystal with rounded franklinite crystals attached to it. Fluoresces a nice green colour!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17763
  • Willemite, Franklinite
  • 5.8x3.7x2.2 cm
  • Largest Crystal Size: n/a
  • $35.00
  • Franklin

  • New Jersey, USA
  • This specimen is mostly black franklinite wit ha little willemite that fluoresces bright green. The carbonate between the franklinite crystals fluoresces an orange colour but under long-wave U/V light only.
Willemite Franklin, New Jersey, Various specimens
  • Item #17770
  • Willemite
  • 7.5x5.0x3.5 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Franklin

  • New Jersey, USA
  • Highly tenebrescent willemite covers the top of this specimen. Brilliant!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17778
  • Willemite, Franklinite
  • 5.7x5.2x4.0 cm
  • $45.00
  • Franklin

  • New Jersey, USA
  • Rich willemite is dispersed through, largely, thick, black franklinite and some other unidentified minerals. Nice colour!
Willemite, AndraditeFranklin, New Jersey, Various specimens
  • Item #17779
  • Willemite, Andradite
  • 8.1x3.7x4.7 cm
  • $75.00
  • Franklin

  • New Jersey, USA
  • Very tich, coarse willemite intermixed with resinous andradite garnet. Pretty cool!
Willemite, Calcite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17761
  • Willemite, Calcite, Franklinite
  • 6.2x4.0x4.3 cm
  • Largest Crystal Size: n/a
  • $60.00
  • Franklin

  • New Jersey, USA
  • Deep green fluorescent willemite richly spread through red fluorescent franklinite and black franklinite.
Andradite, Calcite, WillemiteFranklin, New Jersey, Various specimens
  • Item #17773
  • Andradite, Calcite, Willemite
  • 8.4x6.7x3.3 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Franklin

  • New Jersey, USA
  • Deep red calcite, a little bright green willemite fluoresce within a matrix of golden andradite.
WillemiteFranklin, New Jersey, Various specimens
  • Item #17686
  • Willemite
  • 7.8x7.0x5.3 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Franklin

  • New Jersey, USA
  • This piece has a large glob of willemite on the front/top of it that glows a very strong fluorescent green under U/V light. Much of the matrix appears to be pinkish rhodonite or rhodochrosite. Spectacular old-time Franklin specimen.
Calcite, Andradite, Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17782
  • Calcite, Andradite, Willemite, Franklinite
  • 8.7x7.2x6.5 cm
  • Largest Crystal Size: n/a
  • $60.00
  • Franklin

  • New Jersey, USA
  • This is interesting. The mixture of andradite and calcite provides the red fluorescence in this specimen. Probably just the calcite but there is a lot of garnet there! A little willemite, as well.
Zincite, Willemite, Calcite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #17762
  • Zincite, Willemite, Calcite, Franklinite
  • 9.9x5.1x2.7 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Franklin

  • New Jersey, Canada
  • Rich, deep red zincite intermixed with willemite and franklinite. Excellent fluorescence. The specimen has a partial white coating that appears like hydrozincite and fluoresces a light blue-white. Not sure though. Interesting and brightly fluorescent specimen!
ZinciteFranklin, New Jersey, Various specimens
  • Item #20108
  • Zincite
  • 12.6x8.8x2.5 cm
  • Largest Crystal Size: as above
  • $120.00
  • Franklin
    New Jersey, USA
  • This is a solid mass of light orange zincite that appears to have been slickensided. Interesting old classic from Franklin. Just a tiny bit of willemite in the specimen. Dense!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20220
  • Willemite, Franklinite
  • 14.0x11.58.3 cm
  • Largest Crystal Size: n/a
  • $120.00
  • Franklin

  • New Jersey, USA
  • This large chunk of high-grade willemite and franklinite has a zone through the middle of it that looks like fine-grained feldspar and franklinite. Vey bright fluorescence that lingers after the U/V light source is turned off. Extra postage on this one!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20222
  • Willemite, Franklinite
  • 10.3x6.5x6.0 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Franklin

  • New Jersey, USA
  • An extremely rich specimen of willemite and franklinite, from THE location for fluorescent willemite!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20223
  • Willemite, Franklinite
  • 14.5x9.7x6.3 cm
  • Largest Crystal Size: n/a
  • $140.00
  • Franklin

  • New Jersey, USA
  • Wow! A stunningly fluorescent specimen of willemite and franklinite with a 35mm thick vein of solid franklinite on one end and a willemite and franklinite mix for the rest of the specimen. Very heavy so extra postage required. Amazing zinc mineralization!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20225
  • Willemite, Franklinite
  • 11.6x8.0x6.8 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Franklin

  • New Jersey, USA
  • A very cool specimen showing a matrix cut by a vein of willemite near the top of the specimen. As well, the lower part of the matrix is a mixture of franklinite and willemite. Extra postage required. Looks great in U/V light!
Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20226
  • Willemite, Franklinite
  • 13.5x8.3x8.0 cm
  • Largest Crystal Size: n/a
  • $120.00
  • Franklin

  • New Jersey, USA
  • A beautifully fluorescent specimen of willemite, associated with franklinite and some other non-fluorescent minerals. Much of the matrix is willemite but as well, there is a vein of willemite on the right side, embedded in neutral minerals that gives a more interesting look to the piece under U/V light. Extra postage required due to weight. Looks great!
CalciteFranklin, New Jersey, Various specimens
  • Item #20232
  • Calcite
  • 10.2x8.3x5.5 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Franklin

  • New Jersey, USA
  • A thick, orange cleavage of calcite with some other minerals around the edges. Only the calcite fluoresces a deep red colour. A more deep red, less pink than in the photo. Different!
CalciteFranklin, New Jersey, Various specimens
  • Item #20233
  • Calcite
  • 6.7x5.8x3.5 cm
  • Largest Crystal Size: n/a
  • $35.00
  • Franklin

  • New Jersey, USA
  • This fragment of calcite fluoresces a deep red colour (less pinky than in the picture). Beautiful!
Calcite, Franklinite, Willemite, AndraditeFranklin, New Jersey, Various specimens
  • Item #20227
  • Calcite, Franklinite, Willemite, Andradite
  • 12.3x10.0x4.5 cm
  • Largest Crystal Size: n/a
  • $55.00
  • Franklin

  • New Jersey, USA
  • This specimen is mostly rhodonite and franklinite with a little fluorescent calcite and willemite. Interesting mineralization!
Willemite, Calcite, AndraditeFranklin, New Jersey, Various specimens
  • Item #20228
  • Willemite, Calcite, Andradite
  • 7.7x5.6x5.8 cm
  • Largest Crystal Size: n/a
  • $55.00
  • Franklin

  • New Jersey, USA
  • This specimen is mostly massive andradite garnet with a smattering of fluorescent willemite and calcite. Looks great.
Willemite, Calcite, RhodoniteFranklin, New Jersey, Various specimens
  • Item #20229
  • Willemite, Calcite, Rhodonite
  • 6.3x6.3x6.3 cm
  • Largest Crystal Size: n/a
  • $45.00
  • Franklin

  • New Jersey, USA
  • While mostly rhodonite, this specimen has a nice showing of fluorescent green willemite and red calcite, as you can see from the photo. Classic Franklin!
Willemite, AndraditeFranklin, New Jersey, Various specimens
  • Item #20230
  • Willemite, Andradite
  • 7.0x6.0x5.5 cm
  • Largest Crystal Size: n/a
  • $55.00
  • Franklin

  • New Jersey, USA
  • This specimen is mostly massive willemite with a zone of brownish, resinous andradite on the back. Fluoresces a solid subdued green. Nice!
Esperite, Hardystonite, Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20235
  • Esperite, Hardystonite, Willemite, Franklinite
  • 13.0x8.4x6.0 cm
  • Largest Crystal Size: n/a
  • $140.00
  • Franklin

  • New Jersey, USA
  • Bright yellow esperite, fluorescent lime green willemite and purple hardystonite are the colourful fluorescent minerals in this specimen. Heavy and rich! Extra postage required. Looks great!
Esperite, Hardystonite, Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20236
  • Esperite, Hardystonite, Willemite, Franklinite
  • 8.2x7.3x7.5 cm
  • Largest Crystal Size: n/a
  • $140.00
  • Franklin

  • New Jersey, USA
  • There are several interesting and rare minerals in this specimen that fluoresce the following colours: Esperite is yellow-yellow green, willemite is bright lime green and the hardystonite is a purple colour. Heavy so extra postage required. Rich and great-looking!
Zincite, Willemite, FrankliniteFranklin, New Jersey, Various specimens
  • Item #20243
  • Zincite, Willemite, Franklinite
  • 10.0x6.7x4.3 cm
  • Largest Crystal Size: n/a
  • $110.00
  • Franklin

  • New Jersey, USA
  • A very rich specimen of greenish willemite and deep red zincite in association with pitch-black franklinite. Of course the willemite fluoresces a bright green under U/V light. Very rich!
Zincite, Franklinite, CalciteFranklin, New Jersey, Various specimens
  • Item #20245
  • Zincite, Franklinite, Calcite
  • 10.2x5.6x5.3 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Franklin

  • New Jersey, USA
  • A rich specimen of deep red zincite and black-metallic franklinite with a little calcite and willemite. Of course the willemite fluoresces green and the calcite red. Rich!
Friedelite, Willemite, SerpentineFranklin, New Jersey, Various specimens
  • Item #20933
  • Friedelite, Willemite, Serpentine
  • 11.6x5.9x3.9 cm
  • Largest Crystal Size: n/a
  • $85.00
  • Sterling Hill Mine
  • Ogdensburg
    New Jersey, USA
  • Rare reddish friedelite intermixed with black franklinite and very dark brown willemite and associated with serpentine in this specimen. Old Franklin Mineral Museum label accompanies it.