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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Apr 18, 2020 15:45 Post subject: Re: Collection of Joseph D'Oliveira |
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It's been a while since I have posted but I am finally through my Tucson related work while still isolating at home.
Mineral: | Fluorite |
Locality: | Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar | |
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Dimensions: | 11x8.5x6 cm |
Description: |
A nice fluorite plate from Madagascar, unfortunately the picture doesn't do it justice. |
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14281 Time(s) |
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Mineral: | Fluorite |
Locality: | Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar | |
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Dimensions: | 15x9x12 cm |
Description: |
The large crystal measures 5.5x5 cm |
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14279 Time(s) |
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Mineral: | Prehnite |
Locality: | Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | 14x12x7 cm |
Description: |
A rather unusual prehnite specimen. |
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14267 Time(s) |
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Mineral: | Titanite on Ilmenite pseudomorped by Rutile with Microcline |
Locality: | Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco | |
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Dimensions: | 10x6x5.5 cm |
Description: |
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14279 Time(s) |
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Mineral: | Malachite |
Locality: | Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire) | |
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Dimensions: | 10x11x7 cm |
Description: |
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14288 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 4900
Location: Barcelona
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Posted: Apr 18, 2020 16:54 Post subject: Re: Collection of Joseph D'Oliveira |
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Hi Joseph,
About the Ilmenite after Rutile, in your image I can see Titanite on a Feldspar (Microcline) but I can't see the Ilmenite after Rutile. Maybe is not visible on the image?
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Apr 18, 2020 17:00 Post subject: Re: Collection of Joseph D'Oliveira |
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The titanite crystals grow on the blades of ilmenite and almost completely cover them. I have other pieces that have significantly more ilmenite but they are not as aesthetic. The ilmenite appears as dark areas deep within the microcline crystals.
Jordi Fabre wrote: | Hi Joseph,
About the Ilmenite after Rutile, in your image I can see Titanite on a Feldspar (Microcline) but I can't see the Ilmenite after Rutile. Maybe is not visible on the image? |
_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4110
Location: Germany
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Posted: Apr 19, 2020 02:28 Post subject: Re: Collection of Joseph D'Oliveira |
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I like the fluorites from Madagascar, nice specimens!
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Apr 30, 2020 16:07 Post subject: Re: Collection of Joseph D'Oliveira |
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Jordi,
I have had an opportunity to do some further work on these specimens and from what I can visually ascertain, the titanite crystals grow on the ilmenite pseudo's. The ilmenite/rutile appears to act as a seed point for the titanite crystals with some of the titanite crystals included by ilmenite/rutile. In many cases the titanite completely encompasses the ilmenite/rutile contact point and is only visible when the titanite crystals are accidentally blasted off during cleaning. Unfortunately, while I have a decent binocular microscope, I don't have the ability to recover photographs from it.
Stay safe everyone.
Jordi Fabre wrote: | Hi Joseph,
About the Ilmenite after Rutile, in your image I can see Titanite on a Feldspar (Microcline) but I can't see the Ilmenite after Rutile. Maybe is not visible on the image? |
_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Sep 27, 2020 11:06 Post subject: Re: Collection of Joseph D'Oliveira |
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A couple of new additions.
Mineral: | Quartz (variety amethyst) |
Locality: | Blue Points Mine, Pearl Lake, McTavish Township, Thunder Bay District, Ontario, Canada | |
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Dimensions: | 9 x 6.5 x 3 cm's |
Description: |
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Viewed: |
13229 Time(s) |
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Mineral: | Fluorite |
Locality: | De'an Mine, Wushan, De'an, Jiujiang Prefecture, Jiangxi Province, China | |
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Dimensions: | 8 x 8 x 3.5 cm's |
Description: |
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13238 Time(s) |
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Mineral: | Fluorite, Arsenopyrite and Löllingite with Magnetite |
Locality: | Huanggang Mines, Hexigten Banner (Kčshíkčténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China | |
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Dimensions: | 7.5 x 6 x 3.5 cm's |
Description: |
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Viewed: |
13282 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Oct 23, 2020 15:39 Post subject: Re: Collection of Joseph D'Oliveira |
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A couple of new additions.
Mineral: | Chalcopyrite with Arsenopyrite, Calcite and Muscovite |
Locality: | Minas da Panasqueira, Aldeia de Săo Francisco de Assis, Covilhă, Castelo Branco, Cova da Beira, Centro, Portugal | |
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Dimensions: | 11.5x8.5x6.5 cm's |
Description: |
The large chalcopyrite crystal measures 7x6x3.8 cm's |
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Viewed: |
13099 Time(s) |
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Mineral: | Copper |
Locality: | Keweenaw County, Michigan, USA | |
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Dimensions: | 3x1.5x1.2 cm's |
Description: |
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Viewed: |
13084 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Bob Morgan
Joined: 18 Jan 2018
Posts: 228
Location: Savannah, Georgia
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Posted: Oct 23, 2020 18:22 Post subject: Re: Collection of Joseph D'Oliveira |
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Nice tetrahexahedral copper crystals!
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Dec 30, 2021 21:02 Post subject: Re: Collection of Joseph D'Oliveira |
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Bornite on Silver
Mineral: | Silver with Bornite |
Locality: | Coleman Mine, Levack Township, Sudbury District, Ontario, Canada | |
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Dimensions: | 4.8 x 3.5 x 1 cm |
Description: |
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Viewed: |
10896 Time(s) |
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Mineral: | Silver with Bornite |
Locality: | Coleman Mine, Levack Township, Sudbury District, Ontario, Canada | |
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Dimensions: | 4.8 x 3.5 x 1 cm |
Description: |
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Viewed: |
10902 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Sante Celiberti
Joined: 04 Oct 2019
Posts: 699
Location: Tuscany
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Posted: Dec 31, 2021 06:27 Post subject: Re: Collection of Joseph D'Oliveira |
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Unusual and pleasing association.
Congratulations and a happy new year.
Sante
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Feb 14, 2022 16:24 Post subject: Re: Collection of Joseph D'Oliveira |
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A recent addition to my collection.
Mineral: | Stibnite |
Locality: | Herja Mine, Chiuzbaia, Baia Sprie, Maramures, Romania | |
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Dimensions: | 5.5 x 6 x 3.5 cm |
Description: |
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Viewed: |
10548 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Feb 19, 2022 11:09 Post subject: Re: Collection of Joseph D'Oliveira |
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Semi transparent dolomite crystals with micro crystals of svanbergite in small druzy patches.
Mineral: | Dolomite with Svanbergite |
Locality: | Mount Brussilof Mine, Radium Hot Springs, Golden Mining Division, British Columbia, Canada | |
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Dimensions: | 6x3.5x4.1 cm's |
Description: |
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Viewed: |
10424 Time(s) |
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Description: |
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Viewed: |
10422 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Mar 17, 2022 10:01 Post subject: Re: Collection of Joseph D'Oliveira |
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I don't often add thumbnail specimens to my collection but in the case of local pieces, I usually make an exception. This is a very interesting dolomite piece that shows either growth interruption or twinning, I would tend to support the former view based on the visual evidence but would appreciate any suggestions. It is also included with micro chalcopyrite and pyrrhotite crystals.
Mineral: | Dolomite |
Locality: | Coleman Mine, Levack Township, Sudbury District, Ontario, Canada | |
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Dimensions: | 2.8x3.2x2 cm's |
Description: |
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Viewed: |
10132 Time(s) |
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Description: |
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Viewed: |
10131 Time(s) |
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Description: |
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Viewed: |
10125 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Sante Celiberti
Joined: 04 Oct 2019
Posts: 699
Location: Tuscany
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Posted: Mar 17, 2022 17:04 Post subject: Re: Collection of Joseph D'Oliveira |
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Being Dolomite, it is simply splendid. No matter the size.
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Apr 17, 2022 10:15 Post subject: Re: Collection of Joseph D'Oliveira |
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Octahedral crystals of pyrite included with micro magnetite crystals in a pyrrhotite-pyrite matrix.
Mineral: | Pyrite (octahedral) with Magnetite and Pyrrhotite |
Locality: | Coleman Mine, Levack Township, Sudbury District, Ontario, Canada | |
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Dimensions: | 11.5x10x3.2 cm's |
Description: |
Pyrite included with micro magnetite crystals in a pyrrhotite-pyrite matrix. Not the greatest of condition but rare for the locality. |
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Viewed: |
9739 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Nov 11, 2022 22:11 Post subject: Collection of Joseph D'Oliveira |
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A recent addition.
Mineral: | Schorl on Quartz |
Locality: | Dara-i-Pech pegmatite, Chapa Dara District, Kunar Province (Konar), Afghanistan | |
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Dimensions: | 5x5x3.5 cm's |
Description: |
Schorl on druzy quartz crystal matrix. |
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Viewed: |
8164 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Nov 29, 2022 21:04 Post subject: Re: Collection of Joseph D'Oliveira |
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A self collected piece.
Mineral: | Silver with Bornite |
Locality: | Silver Miller Mine, Coleman Township, Cobalt area, Cobalt-Gowganda Region, Timiskaming District, Ontario, Canada | |
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Dimensions: | 6.8x5.8x1.6 cm's |
Description: |
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Viewed: |
7936 Time(s) |
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Mineral: | Silver with Bornite |
Locality: | Silver Miller Mine, Coleman Township, Cobalt area, Cobalt-Gowganda Region, Timiskaming District, Ontario, Canada | |
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Dimensions: | 6.8x5.8x1.6 cm's |
Description: |
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Viewed: |
7933 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Nov 29, 2022 21:08 Post subject: Re: Collection of Joseph D'Oliveira |
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An unusual Canadian locality.
Mineral: | Calcite with Quartz |
Locality: | Stanleigh Mine, Elliot Lake area, Gunterman Township, Algoma District, Ontario, Canada | |
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Dimensions: | 6x5x2 cm's |
Description: |
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Viewed: |
7931 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Nov 29, 2022 21:21 Post subject: Re: Collection of Joseph D'Oliveira |
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A recent addition.
Mineral: | Wulfenite |
Locality: | Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia | |
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Dimensions: | 7.5x5x3 cm's |
Description: |
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Viewed: |
7933 Time(s) |
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Mineral: | Wulfenite |
Locality: | Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia | |
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Dimensions: | 7.5x5x3 cm's |
Description: |
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Viewed: |
7945 Time(s) |
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Mineral: | Wulfenite |
Locality: | Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia | |
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Dimensions: | 7.5x5x3 cm's |
Description: |
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Viewed: |
7935 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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Joseph DOliveira
Joined: 29 Jan 2012
Posts: 303
Location: Hanmer, Ontario
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Posted: Nov 30, 2022 20:11 Post subject: Re: Collection of Joseph D'Oliveira |
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A few more from my collection.
Mineral: | Gold |
Locality: | White Creek, Essequibo Islands-West Demerara Region, Guyana | |
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Dimensions: | 2.2x1.8x.5 cm's |
Description: |
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Viewed: |
7757 Time(s) |
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Mineral: | Pyrite |
Locality: | Copper Cliff North Mine, McKim Township, Sudbury District, Ontario, Canada | |
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Dimensions: | 5.3x7x2.3 cm's |
Description: |
A mass of connected cubes with a slight curvature typical of the pyrite from this mine. |
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Viewed: |
7752 Time(s) |
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Mineral: | Silver |
Locality: | Green-Meehan Mine, Cobalt area, Cobalt-Gowanda Region, Bucke Township, Timiskaming District, Ontario, Canada | |
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Dimensions: | 6.5x5x1.2 cm's |
Description: |
Silver leaf with an area of crude crystals. Collected in the area of the |
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Viewed: |
7758 Time(s) |
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Mineral: | Clinosafflorite on Silver |
Locality: | Rusty Lake Mine, Gowanda area, Cobalt-Gowanda Region, Leith Township, Timiskaming District, , Ontario, Canada | |
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Dimensions: | 5.5x3.5x1.2 cm's |
Description: |
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Viewed: |
7752 Time(s) |
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Mineral: | Löllingite on Arsenic |
Locality: | Glasberg Quarry, Nieder-Beerbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse/Hessen, Germany | |
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Dimensions: | 6.5x4x1.3 cm's |
Description: |
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Viewed: |
7750 Time(s) |
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_________________ Joseph D'Oliveira
Hanmer, Ontario
Canada |
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