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Collection of Joseph D'Oliveira
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Joseph DOliveira




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PostPosted: Apr 18, 2020 15:45    Post subject: Re: Collection of Joseph D'Oliveira  

It's been a while since I have posted but I am finally through my Tucson related work while still isolating at home.


FMF1.JPG
 Mineral: Fluorite
 Locality:
Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar
 Dimensions: 11x8.5x6 cm
 Description:
A nice fluorite plate from Madagascar, unfortunately the picture doesn't do it justice.
 Viewed:  7918 Time(s)

FMF1.JPG



FMF2.JPG
 Mineral: Fluorite
 Locality:
Mandrosonoro, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar
 Dimensions: 15x9x12 cm
 Description:
The large crystal measures 5.5x5 cm
 Viewed:  7914 Time(s)

FMF2.JPG



FMF3.JPG
 Mineral: Prehnite
 Locality:
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
 Dimensions: 14x12x7 cm
 Description:
A rather unusual prehnite specimen.
 Viewed:  7895 Time(s)

FMF3.JPG



FMF4.JPG
 Mineral: Titanite on Ilmenite pseudomorped by Rutile with Microcline
 Locality:
Imilchil area, Anti-Atlas, Er Rachidia Province, Drâa-Tafilalet Region, Morocco
 Dimensions: 10x6x5.5 cm
 Description:
 Viewed:  7916 Time(s)

FMF4.JPG



FMF6.JPG
 Mineral: Malachite
 Locality:
Mindingi Mine (Mindigi Mine), Swambo, Kambove District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire)
 Dimensions: 10x11x7 cm
 Description:
 Viewed:  7916 Time(s)

FMF6.JPG



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Jordi Fabre
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PostPosted: Apr 18, 2020 16:54    Post subject: Re: Collection of Joseph D'Oliveira  

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




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PostPosted: Apr 18, 2020 17:00    Post subject: Re: Collection of Joseph D'Oliveira  

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?

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Tobi
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PostPosted: Apr 19, 2020 02:28    Post subject: Re: Collection of Joseph D'Oliveira  

I like the fluorites from Madagascar, nice specimens!
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Joseph DOliveira




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PostPosted: Apr 30, 2020 16:07    Post subject: Re: Collection of Joseph D'Oliveira  

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?

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Joseph D'Oliveira
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Joseph DOliveira




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PostPosted: Sep 27, 2020 11:06    Post subject: Re: Collection of Joseph D'Oliveira  

A couple of new additions.


P1019516 (3).JPG
 Mineral: Quartz (variety amethyst)
 Locality:
Blue Points Mine, Pearl Lake, McTavish Township, Thunder Bay District, Ontario, Canada
 Dimensions: 9 x 6.5 x 3 cm's
 Description:
 Viewed:  6851 Time(s)

P1019516 (3).JPG



P1019507 (2).JPG
 Mineral: Fluorite
 Locality:
De'an Mine, Wushan, De'an, Jiujiang Prefecture, Jiangxi Province, China
 Dimensions: 8 x 8 x 3.5 cm's
 Description:
 Viewed:  6857 Time(s)

P1019507 (2).JPG



P1019509 (2).JPG
 Mineral: Fluorite, Arsenopyrite and Löllingite with Magnetite
 Locality:
Huanggang Mines, Hexigten Banner (Kèshíkèténg Qí), Chifeng (Ulanhad), Inner Mongolia Autonomous Region, China
 Dimensions: 7.5 x 6 x 3.5 cm's
 Description:
 Viewed:  6882 Time(s)

P1019509 (2).JPG



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Joseph DOliveira




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PostPosted: Oct 23, 2020 15:39    Post subject: Re: Collection of Joseph D'Oliveira  

A couple of new additions.


P1019804 (2).JPG
 Mineral: Chalcopyrite with Arsenopyrite, Calcite and Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11.5x8.5x6.5 cm's
 Description:
The large chalcopyrite crystal measures 7x6x3.8 cm's
 Viewed:  6715 Time(s)

P1019804 (2).JPG



P1019807 (2).JPG
 Mineral: Copper
 Locality:
Keweenaw County, Michigan, USA
 Dimensions: 3x1.5x1.2 cm's
 Description:
 Viewed:  6705 Time(s)

P1019807 (2).JPG



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Bob Morgan




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PostPosted: Oct 23, 2020 18:22    Post subject: Re: Collection of Joseph D'Oliveira  

Nice tetrahexahedral copper crystals!
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Joseph DOliveira




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PostPosted: Dec 30, 2021 21:02    Post subject: Re: Collection of Joseph D'Oliveira  

Bornite on Silver


P1016109.JPG
 Mineral: Silver with Bornite
 Locality:
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
 Dimensions: 4.8 x 3.5 x 1 cm
 Description:
 Viewed:  4521 Time(s)

P1016109.JPG



P1016110.JPG
 Mineral: Silver with Bornite
 Locality:
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
 Dimensions: 4.8 x 3.5 x 1 cm
 Description:
 Viewed:  4520 Time(s)

P1016110.JPG



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Sante Celiberti




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PostPosted: Dec 31, 2021 06:27    Post subject: Re: Collection of Joseph D'Oliveira  

Unusual and pleasing association.

Congratulations and a happy new year.
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Joseph DOliveira




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PostPosted: Feb 14, 2022 16:24    Post subject: Re: Collection of Joseph D'Oliveira  

A recent addition to my collection.


P1017265.JPG
 Mineral: Stibnite
 Locality:
Herja Mine, Chiuzbaia, Baia Sprie, Maramures, Romania
 Dimensions: 5.5 x 6 x 3.5 cm
 Description:
 Viewed:  4170 Time(s)

P1017265.JPG



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Joseph DOliveira




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PostPosted: Feb 19, 2022 11:09    Post subject: Re: Collection of Joseph D'Oliveira  

Semi transparent dolomite crystals with micro crystals of svanbergite in small druzy patches.


P1017331.JPG
 Mineral: Dolomite with Svanbergite
 Locality:
Mount Brussilof Mine, Radium Hot Springs, Golden Mining Division, British Columbia, Canada
 Dimensions: 6x3.5x4.1 cm's
 Description:
 Viewed:  4049 Time(s)

P1017331.JPG



P1017334.JPG
 Description:
 Viewed:  4043 Time(s)

P1017334.JPG



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Joseph DOliveira




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PostPosted: Mar 17, 2022 10:01    Post subject: Re: Collection of Joseph D'Oliveira  

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.


P1017329.JPG
 Mineral: Dolomite
 Locality:
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
 Dimensions: 2.8x3.2x2 cm's
 Description:
 Viewed:  3753 Time(s)

P1017329.JPG



P1017328.JPG
 Description:
 Viewed:  3754 Time(s)

P1017328.JPG



P1017330.JPG
 Description:
 Viewed:  3745 Time(s)

P1017330.JPG



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Sante Celiberti




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PostPosted: Mar 17, 2022 17:04    Post subject: Re: Collection of Joseph D'Oliveira  

Being Dolomite, it is simply splendid. No matter the size.
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Joseph DOliveira




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PostPosted: Apr 17, 2022 10:15    Post subject: Re: Collection of Joseph D'Oliveira  

Octahedral crystals of pyrite included with micro magnetite crystals in a pyrrhotite-pyrite matrix.


P1017323.JPG
 Mineral: Pyrite (octahedral) with Magnetite and Pyrrhotite
 Locality:
Coleman Mine, Levack Township, Sudbury District, Ontario, Canada
 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.
 Viewed:  3359 Time(s)

P1017323.JPG



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Joseph DOliveira




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PostPosted: Nov 11, 2022 22:11    Post subject: Collection of Joseph D'Oliveira  

A recent addition.


P1010474.JPG
 Mineral: Schorl on Quartz
 Locality:
Dara-i-Pech pegmatite, Chapa Dara District, Kunar Province (Konar), Afghanistan
 Dimensions: 5x5x3.5 cm's
 Description:
Schorl on druzy quartz crystal matrix.
 Viewed:  1785 Time(s)

P1010474.JPG



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Joseph DOliveira




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PostPosted: Nov 29, 2022 21:04    Post subject: Re: Collection of Joseph D'Oliveira  

A self collected piece.


P1010721.JPG
 Mineral: Silver with Bornite
 Locality:
Silver Miller Mine, Coleman Township, Cobalt area, Cobalt-Gowganda Region, Timiskaming District, Ontario, Canada
 Dimensions: 6.8x5.8x1.6 cm's
 Description:
 Viewed:  1559 Time(s)

P1010721.JPG



P1010722.JPG
 Mineral: Silver with Bornite
 Locality:
Silver Miller Mine, Coleman Township, Cobalt area, Cobalt-Gowganda Region, Timiskaming District, Ontario, Canada
 Dimensions: 6.8x5.8x1.6 cm's
 Description:
reverse side.
 Viewed:  1559 Time(s)

P1010722.JPG



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Joseph DOliveira




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PostPosted: Nov 29, 2022 21:08    Post subject: Re: Collection of Joseph D'Oliveira  

An unusual Canadian locality.


P1010724.JPG
 Mineral: Calcite with Quartz
 Locality:
Stanleigh Mine, Elliot Lake area, Gunterman Township, Algoma District, Ontario, Canada
 Dimensions: 6x5x2 cm's
 Description:
 Viewed:  1557 Time(s)

P1010724.JPG



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PostPosted: Nov 29, 2022 21:21    Post subject: Re: Collection of Joseph D'Oliveira  

A recent addition.


P1010725.JPG
 Mineral: Wulfenite
 Locality:
Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia
 Dimensions: 7.5x5x3 cm's
 Description:
 Viewed:  1553 Time(s)

P1010725.JPG



P1010726.JPG
 Mineral: Wulfenite
 Locality:
Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia
 Dimensions: 7.5x5x3 cm's
 Description:
 Viewed:  1558 Time(s)

P1010726.JPG



P1010727.JPG
 Mineral: Wulfenite
 Locality:
Mežica (Miess), Mežica Municipality, Carinthia Region, Slovenia
 Dimensions: 7.5x5x3 cm's
 Description:
Reverse side.
 Viewed:  1556 Time(s)

P1010727.JPG



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Joseph DOliveira




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PostPosted: Nov 30, 2022 20:11    Post subject: Re: Collection of Joseph D'Oliveira  

A few more from my collection.


P1010733 (3).JPG
 Mineral: Gold
 Locality:
White Creek, Essequibo Islands-West Demerara Region, Guyana
 Dimensions: 2.2x1.8x.5 cm's
 Description:
 Viewed:  1381 Time(s)

P1010733 (3).JPG



P1010743 (2).JPG
 Mineral: Pyrite
 Locality:
Copper Cliff North Mine, McKim Township, Sudbury District, Ontario, Canada
 Dimensions: 5.3x7x2.3 cm's
 Description:
A mass of connected cubes with a slight curvature typical of the pyrite from this mine.
 Viewed:  1376 Time(s)

P1010743 (2).JPG



P1010734 (2).JPG
 Mineral: Silver
 Locality:
Green-Meehan Mine, Cobalt area, Cobalt-Gowanda Region, Bucke Township, Timiskaming District, Ontario, Canada
 Dimensions: 6.5x5x1.2 cm's
 Description:
Silver leaf with an area of crude crystals. Collected in the area of the
 Viewed:  1378 Time(s)

P1010734 (2).JPG



P1010744 (2).JPG
 Mineral: Clinosafflorite on Silver
 Locality:
Rusty Lake Mine, Gowanda area, Cobalt-Gowanda Region, Leith Township, Timiskaming District, , Ontario, Canada
 Dimensions: 5.5x3.5x1.2 cm's
 Description:
 Viewed:  1378 Time(s)

P1010744 (2).JPG



P1010746 (2).JPG
 Mineral: Löllingite on Arsenic
 Locality:
Glasberg Quarry, Nieder-Beerbach, Mühltal, Darmstadt-Dieburg, Darmstadt, Hesse/Hessen, Germany
 Dimensions: 6.5x4x1.3 cm's
 Description:
 Viewed:  1378 Time(s)

P1010746 (2).JPG



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