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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Mar 17, 2012 15:30 Post subject: Re: Collection of Joseph D'Oliveira |
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Thank you for the information Jordi.
_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Mar 17, 2012 16:34 Post subject: Re: Collection of Joseph D'Oliveira |
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A very representative specimen of pyromorphite from China with crystals to 5mm. The colour contrasts very nicely with the white matrix.
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Pyromorphite Daoping Mine, Yangshuo, Guangxi Zhuang, China 9 x 6.5 x 5 cm |
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42803 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Louis Friend
Joined: 26 Jan 2012
Posts: 89
Location: Adelaide
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Posted: Mar 19, 2012 00:51 Post subject: Re: Collection of Joseph D'Oliveira |
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Joseph:
You have a very nice collection. We have a few things in common - 300 piece collection, but imagine it will grow much, much larger given time.
Regards
louis
_________________ "The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible." Dirac |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Mar 21, 2012 20:25 Post subject: Re: Collection of Joseph D'Oliveira |
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A spike ball of marcasite from the Belle Fourche Reservoir in South Dakota. This is a self collected piece and comes from a shale formation that is submerged for most of the year. In the Fall, when the water is drawn down, the shale layer is exposed and you can collect the marcasite by walking along the beach.
Some of these spike balls appear to be a pseudo morph of marcasite after pyrite.
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Marcasite Belle Fourche Reservoir, South Dakota, USA 6 x 6 x 4 cm |
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42635 Time(s) |
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Marcasite Belle Fourche Reservoir, South Dakota, USA 2.5 cm in diameter Two additional spike balls of marcasite from Belle Fourche |
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42776 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Apr 07, 2012 16:07 Post subject: Re: Collection of Joseph D'Oliveira |
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Here are a few of the calcite specimens in my collection.
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Calcite Stanleigh Mine, Elliot Lake, Ontario, Canada 5 x 3 x 3 cm Collected from a lamprophyre dyke on the 3500' level of the mine. |
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42445 Time(s) |
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Calcite Dahisar Quarry, Mumbai, India 12 x 6 x 5 cm White scalenohedral crystal cluster, the crystals have a matte lustre. An early piece from India. |
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42486 Time(s) |
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Calcite San Juan de Rayas Mine, Gaunajuato, Mexico 8 x 5 x 5 cm Striated, scalenohedral calcite crystals sitting on a marcasite matrix. |
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42520 Time(s) |
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Calcite Rio Grande do Sul, Brazil 13 x 7 x 2 cm Very thin plate of scalenohedral calcite from Brazil. |
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42456 Time(s) |
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Calcite Santa Eulalia, Mexico 17 x 7 x 6 cm Interesting colour zoning on this cluster, as the brown colour appears in only one direction. |
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42474 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Jun 02, 2012 10:32 Post subject: Re: Collection of Joseph D'Oliveira |
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It has been a while since I have posted any new mineral specimens but Spring is a busy time of year. I recently made a trip to the Cobalt-Gowganda area here in Ontario, a very prominent silver producing area from the late 1800's to the 1970's. For the time being all of the mines have been abandoned but numerous waste piles of rock are left for the collector to poke through.
Most of the easy silver has been collected from the surface but a metal detector and a pick and shovel are all that is needed to discover a few nice specimens on a days outing. The following specimens are all from the Cobalt-Gowganda area, some are self collected and some have been purchased from other collectors.
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Using the metal detector to locate "treasures" at an old mine site. The fencing that you see in the background is to protect against falling into an open hole. Many of the very rich silver veins were exposed on surface and mined out completely. |
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42143 Time(s) |
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Native silver crystals with a safflorite coating Langis Mine, New Liskeard, Ontario, Canada 6x4.5x2 cm This crystal was etched using acid to expose the herring bone silver crystals. As with most of these specimens, a thin coating of safflorite is attached to the silver. |
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42105 Time(s) |
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Native silver crystals (herring bone) covered with safflorite Langis Mine, New Liskeard, Ontario, Canada 7x4x5 cm Etched silver crystals with safflorite coating. |
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42190 Time(s) |
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Native Leaf Silver Langis Mine, New Liskeard, Ontario, Canada 10x2x.3 cm Nice slender leaf of native silver weighing 84 grms. |
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42145 Time(s) |
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"Float Silver" Cobalt area 8x3.5x.5 cm A piece of float silver from the cobalt area. Many of the silver veins were exposed on surface, during glaciation the some silver was removed and deposited further south as the glaciers travelled. The "float silver" can be identified by a spongy appearance as all of the other minerals have been naturally etched away. |
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42125 Time(s) |
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Native Bismuth Keeley-Frontier Mine, Silver Centre, Ontario, Canada 16.5x12x1.5 cm A cut and polished slab of gabbro showing native bismuth filling joint fractures. |
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42118 Time(s) |
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Arsenopyrite on safflorite Harrison-Hibbert (Ruby) Mine, Cobalt, Ontario, Canada 8x5x3 cm Druzy arsenopyrite crystals on massive safflorite. |
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42129 Time(s) |
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Argentite Silver Queen Mine, Cobalt, Ontario, Canada 15x13x.2 cm A complete leaf of argentite originally collected in 1914. This is the best example of an argentite leaf I've seen from the Cobalt area. |
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42221 Time(s) |
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Native silver crystals with a safflorite coating Mensilvo Mine, Cobalt, Ontario, Canada 7.5x7x1 cm A nice cluster of silver crystals on a leaf of native silver. Some of the crystals have a thin coating of safflorite. The specimen weighs 179 grams. |
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42160 Time(s) |
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Silver Crystals Nippising Mine, Cobalt, Ontario, Canada 19x10.5x.5 cm A large cut slab displaying a network of fine silver crystals and veinlets. The specimen is a brecciated vein of calcite. One funny sidebar to this spcimen, is the way the breccia pieces are arranged to show what looks like the face of a dog. |
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42133 Time(s) |
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Native silver on safflorite Langis Mine, New Liskeard, Ontario, Canada 9x5x1 cm Native silver on safflorite, if you look closely, you will see striations on the silver from the lower left to the upper right. These striations are slickensides and are formed as a result of movement in the fault where the silver was forming. |
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42098 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Jul 05, 2012 05:55 Post subject: Re: Collection of Joseph D'Oliveira |
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A recently collected specimen of native copper crystals in calcite from the Copper Creek Mine, Batchawana Bay area, near Sault Ste Marie, Ontario, Canada. The copper crystals are free floating in the calcite.
The specimen was found in a creek bottom using a metal detector, it was then lightly etched with acid to remove oxidation and expose the copper crystals.
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Native Copper Crystals Copper Creek Mine, Batchawana Bay, Sault Ste Marie, Ontario, Canada 7x5x3.5 cm |
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41945 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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Posted: Jul 05, 2012 20:35 Post subject: Re: Collection of Joseph D'Oliveira |
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Joseph D'Oliveira wrote: | A recently collected specimen of native copper crystals in calcite from the Copper Creek Mine, Batchawana Bay area, near Sault Ste Marie, Ontario, Canada. The copper crystals are free floating in the calcite.
The specimen was found in a creek bottom using a metal detector, it was then lightly etched with acid to remove oxidation and expose the copper crystals. |
Very cool specimen!
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Dec 16, 2012 11:49 Post subject: Re: Collection of Joseph D'Oliveira |
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Large almandine garnet collected from a small pocket within a biotite schist. These large garnets are common in the area and typically display pitted faces from contact with the biotite within the schist. This specimen has seven good crystal faces and then typically is more rounded on the contact side.
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Almandine Garnet Kukagami Lake Road, Sudbury, Ontario, Canada 7 x 7 x 6.5 cm |
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41156 Time(s) |
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Native Silver in Bornite Coleman Mine, Levack, Ontario, Canada 12 x 4.5 x 3 cm Native silver in bornite from Sudbury is typically formed in thin sheets along joint contacts within bornite veins. These high copper veins are found in the foot wall rocks away from the nickel ore bodies that are commonly mined here. |
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41127 Time(s) |
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Pyrite Nanisivik Mine, North West Territories, Canada 7 x 6 x 5 cm Striated, interpenetrating cubes of pyrite from a now closed location. |
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41134 Time(s) |
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Baryte Shirley Basin, near Casper, Wyoming 5 x 5 x 3.5 & 5 x 4 x 3 cm Pair of Baryte blades self collected in the Shirley Basin area in central Wyoming. The Baryte blades can be found in small pockets along high cliffs of consolidated volcanic ash. I spent many weekends searching for these and only found one pocket in miles of cliff faces that were searched. |
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41094 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Chris Foltz
Joined: 28 Oct 2012
Posts: 92
Location: Maryland
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Posted: Dec 16, 2012 12:08 Post subject: Re: Collection of Joseph D'Oliveira |
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Thanks so much for the spell-check.
Truly nice specimens...
_________________ stone-cutter |
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Michael Shaw
Site Admin
Joined: 30 Apr 2008
Posts: 2069
Location: Oklahoma
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Posted: Dec 24, 2012 17:26 Post subject: Re: Collection of Joseph D'Oliveira |
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Joseph, that is a wonderful dendritic silver from the Langis Mine. Congratulations.
Michael
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Dec 24, 2012 18:03 Post subject: Re: Collection of Joseph D'Oliveira |
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crosstimber wrote: | Joseph, that is a wonderful dendritic silver from the Langis Mine. Congratulations.
Michael |
Thanks Michael,
Occasionally we find a treasure when we etch the silver from calcite vein material. There are literally hundreds of mines in the Cobalt area with old waste piles, most have little silver but every once in a while you find one that makes all of the other trips worthwhile.
_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Feb 15, 2013 22:56 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more pieces from my collection.
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Malachite Kasompe, Zambia 5 x 5 x 4.5 cm Fibrous Malachite |
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40168 Time(s) |
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Pyromorphite Bunker Hill Mine, Idaho, USA 6.5 x 4 x 2 cm |
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40069 Time(s) |
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Wire Silver on Acanthite Bull Dog Mine, Creede, Colorado, USA 3.5 x 1.5 x 1 cm A beautiful wire silver on acanthite from a famous US locality |
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40095 Time(s) |
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Native Silver on Arsenic Pöhla - Erzgebirge 6.5 x 5 x 3.5 |
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40101 Time(s) |
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Ferberite Panasqueira Mine, Castelo Branco, Portugal 10 x 11 x 3.5 cm |
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40058 Time(s) |
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Gold Timmins, Ontario, Canada 5 x 3.5 x 1.5 cm Gold on Quartz |
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40070 Time(s) |
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Gold Timmins, Ontario, Canada 5 x 3.5 x 1.5 cm Gold on Quartz |
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40086 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Feb 19, 2013 20:24 Post subject: Re: Collection of Joseph D'Oliveira |
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An eclectic mix of specimens from my collection.
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Crocoite Adelaide Mine, Dundas, Tasmania, Australia 8 x 5.5 x 4 cm |
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39985 Time(s) |
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Dioptase Tsumeb Mine, Namibia 7 x 4.5 x 4 cm |
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39987 Time(s) |
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Stibnite Herja Mine, Herja, Maramures Co., Romania 12 x 6.5 x 5.5 cm |
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39975 Time(s) |
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Hematite Ouro Preto, Minas Gerais, Brazil 6 x 5.5 x 3 cm |
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39973 Time(s) |
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Hematite after Magnetite Altiplano Payun Matru, Mendoza, Argentina 5 x 4 x 3 cm |
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40016 Time(s) |
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Stibnite Breiner Mine, Baiut, Maramures Co., Romania 5 x 3.5 x 3.5 |
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39976 Time(s) |
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Goethite after Pyrite Pelican Point Quarry, Utah, USA 5.5 x 5 x 3 cm |
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39970 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Jan 25, 2014 22:01 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more postings of my collection pieces.
Description: |
Wulfenite Glove Mine, Santa Cruz County, Arizona, USA 6x4x3 cm |
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37864 Time(s) |
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Goethite with Pyrite, Calcite and dolomite Helen Mine, Wawa, Ontario, Canada 7x5x2 cm Goethite balls on matrix from a long closed locality. |
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37984 Time(s) |
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Arsenopyrite on Quartz Huanggang Mine, Inner Mongolia, China 8x6x3 cm An aesthetic cluster of Quartz with a central cascade of Arsenopyrite crystals. |
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37872 Time(s) |
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Epidote Pampa Blanca Mine, Huancavelica, Peru 6x6x2.5 cm |
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37818 Time(s) |
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Pyrite after Marcasite Nanisivik Mine, North West Territories, Canada 7x6x4 cm Interesting pseudomorph of Pyrite after Marcasite |
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37869 Time(s) |
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Galena Sa Dena Hess Mine, Watson Lake, Yukon, Canada 7x5x5 cm Unique hoppered Galena crystal cluster. |
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37916 Time(s) |
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Elbaite (Tourmaline) Minas Gerais, Brazil 8x6x2 cm A pair of tourmaline crystals on a Lepidolite Mica matrix. |
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37900 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Jan 26, 2014 09:03 Post subject: Re: Collection of Joseph D'Oliveira |
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It's -35º C outside, so I think I'll post a few more of the smaller pieces in my collection.
Description: |
Wulfenite San Francisco Mine, Sonora, Mexico 7x5x4 cm Nice cluster of "window pane" Wulfenite crystals on Hematite matrix. |
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37794 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Jan 26, 2014 09:27 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more from my collection.
Description: |
Diopside Jeffrey Mine, Asbestos, Quebec, Canada 8x5x1 cm Thin plate of crystals. |
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37844 Time(s) |
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Jamesonite Zacatecas, Mexico 6x3.5x2.5 cm A mat of intertwined Jamesonite needles on Pyrite with Quartz. |
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37771 Time(s) |
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Topaz Mina Veronica, Villa Garcia, Zacatecas, Mexico. 6x4x2 cm A nice vug of Topaz crystals in Rhyolite matrix. |
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37942 Time(s) |
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Stilbite on Calcite Garson Mine, Sudbury, Ontario, Canada 4x4x3 cm Lime green Stilbite on clear calcite, common zeolite from an odd locality. |
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37807 Time(s) |
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Stibnite Baia Sprie mine (Felsöbánya mine), Baia Sprie (Felsöbánya), Maramureș Co., Romania 10x5x1.5 cm A thin plate with multiple sprays of Stibnite. |
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37772 Time(s) |
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Azurite Malbunka Copper Mine, Areyonga, Australia 8.5x4.5x2 cm Interconnected disks of Azurite on a contrasting matrix. |
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37936 Time(s) |
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Corundum variety ruby Mysore, Karnataka, India 7x5x4 cm Doubly terminated corundum crystal on gneiss matrix. |
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37737 Time(s) |
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Selenite Jet, Oklahoma, USA 6x3.5x4 Interconnected Selenite blades included with sand, commonly referred to as "hour glass" Selenite. |
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37732 Time(s) |
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Quartz Divino das Larajeiras, Minas Gerais, Brazil 8x4x2.5 cm A pair of doubly terminated smoky quartz crystals. |
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37684 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Feb 03, 2014 19:47 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more from my collection.
Description: |
Rhodochrosite Kuruman, Kalahari Manganese Fields, Northern Cape Province, South Africa 9x7x3.5 cm Small druzy rhombs of Rhodochrosite with Calcite |
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37583 Time(s) |
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Vanadinite Coudya, Mibladen, Midelt, Morocco 12x5x5 cm Vanadinite with stunning red colour, from the recent find in Coudya. |
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37618 Time(s) |
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Calcite Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri, USA 7x5x3.5 cm A single double terminated Calcite crystal on iridescent Chalcopyrite. |
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37796 Time(s) |
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Fluoro-richterite George Earle Property, Wilberforce, Ontario, Canada 7x6x3 cm Double terminated crystals to 3 cm on calcite matrix. |
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37595 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Mar 12, 2014 20:05 Post subject: Re: Collection of Joseph D'Oliveira |
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Here are a couple of new additions to my collection that I recently picked up in Tucson.
Description: |
Vanadinite Mibladen, Morocco 8x6x3.5 cm 10x5x4.5 cm A pair of Vanadinite specimens with crystals to 2cm. |
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37053 Time(s) |
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Cuprite Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia 8.5x4x4.5 cm A cluster of Cuprite crystals from Russia. |
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37032 Time(s) |
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Vanadinite ACF Mine, Mibladen, Morocco 8.5x6x2.5 cm This Vanadite is different from the usual Mibladen Vanadinite specimens commonly found on the market. There was one dealer that had these specimens and he said it was from a recent small find at the ACF Mine. The crystals are barrel shaped with a unique darker core, giving them a banded appearance. I had thought they might be Arsenian Vanadinite (Endlichite) but analysis showed very little arsenic when I had it tested. Still a very interesting addition. |
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37034 Time(s) |
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Azurite with minor Malachite Tongshan Mine, Anhui, China 11x8x4 cm A large plate of Azurite with a combination of botrioydal azurite as well as small crystals. |
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37060 Time(s) |
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Description: |
Arsenopyrite on Löllingite Huanggang Mines, Chifeng, Inner Mongolia, China 12x10x7.5 cm One of the many rare combinations from the Mongolian locality. This specimen shows better in person than when photographed. It was almost completely covered with a thin coating of chlorite under a combination of druzy quartz and calcite. this is the result of 10 hours in a mild acid bath to remove the calcite, 2 hours in the ultrasonic cleaner, 3 hours of hands on picking with a dental pick and brushing with a toothbrush, combined with a lot of high pressure water blasting to get to this point. I'll probably invest another 4-6 hours to finish the cleaning so that the specimen can truly present itself properly. |
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37024 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 295
Location: Hanmer, Ontario
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Posted: Apr 13, 2014 20:12 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more pieces from my collection.
Description: |
Fluorapophyllite-(K) Jalgaon Quarries, Jalgaon, Maharashtra, India 10x8.5x5.5 cm A cluster of green apophyllite crystals with a minor coating of druzy quartz. |
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36646 Time(s) |
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Elbaite Minas Gerais, Brazil 6x2.5x2 cm Double terminated crystal. |
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36613 Time(s) |
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Arsenopyrite with Fluorite Yaogangxian Mine, Yizhang Co., Chenzhou, Hunan, China 9.5x4.5x3.5 cm A cascade of Arsenopyrite with a few small Fluorite cubes at the base. |
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36632 Time(s) |
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Silver with Chlorargyrite Bouismas Mine, Bou Azer District, Tazenakht, Ouarzazate, Souss-Massa-Draâ, Morocco 9x4x3.5 cm Native Silver crystals with a coating of Chlorargyrite, etched from the calcite matrix. |
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36668 Time(s) |
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Dioptase Tsumeb Mine, Tsumeb, Otjikoto, Namibia 7x5x3.5 cm Dioptase crystals to 5mm. |
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36651 Time(s) |
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Description: |
Dioptase Esperanza Mine, Córdoba, Argentina 8x3.5x1 Dioptase crystals to 7mm, scattered on a Calcite matrix. |
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36633 Time(s) |
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Copper Bennet's Brook, Cap d'Or, Nova Scotia, Canada 6x3x1 cm An aesthetic leaf of Native Copper attached to matrix. |
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36632 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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