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FABRE MINERALS
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Fabre Minerals


May 2011 Update (2)

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FROM THE DESMOND SACCO COLLECTION


Text: Carles Curto (curator of the Geology Museum, Barcelona ) & Jordi Fabre
Assistance from John S. White (former Smithsonian curator)

 


Desmond Sacco is an authority when it comes to African as well as worldwide minerals. I met him many years ago at the Munich Show when it was in the city of Munich and Desmond was one of the stars of the show, buying the best that appeared there. His collection was legendary, not only because of the wonders we knew he would certainly have acquired given his position in the mines of the Kalahari Manganese Field (Hotazel, Wessels, N'Chwaning...) and his proximity to the legendary Tsumeb, but also because we saw what he was buying, and thus got an idea of the quality of his collection.

Many years and many mineral Munich shows have now passed and, for the first time, Desmond Sacco has decided to sell some specimens from his collection, starting with miniatures and thumbnails and some cabinet specimens. We have been fortunate to acquire the first batch, consisting of material from Tsumeb and the Kalahari, and with these we can make a virtual trip to the mines and minerals guided by Desmond and his collecting criteria.


From the web page of Desmond Sacco


We hope you enjoy these samples, which represent an important part of mineralogy and mineral collecting in Africa.

Jordi Fabre

Quartz (Amethyst)
Quartz (Amethyst). Quartz (Amethyst).

TE69S5: Transparent, colorless and very neat crystals with very well marked phantom growth of deep amethyst color. The base of the sample is recrystallized and the main crystal has a small geometrical indentation on the faces of the rhombohedron.
Goboboseb Mountain, Brandberg, Erongo  Namibia (2001)

Specimen size: 10.4 × 9.2 × 3.8 cm = 4.1” × 3.6” × 1.5”

Main crystal size: 10.4 × 2.2 cm = 4.1” × 0.9”

With handwritten label from the Desmond Sacco Collection


Sold
Sceptered Quartz (Amethyst) and smoky Quartz

TF91S5: Very well defined scepter growth with echeloned faces, internal and external, and very well marked "window" forms. The sample is uniformly violet with smoky areas in the scepter. The base of the piece had been polished to give it some stability.
Goboboseb Mountain, Brandberg, Erongo  Namibia (2001)

Specimen size: 10.4 × 4.5 × 4.3 cm = 4.1” × 1.8” × 1.7”

With handwritten label from the Desmond Sacco Collection


Sceptered Quartz (Amethyst) and smoky Quartz. Front
Front
Sceptered Quartz (Amethyst) and smoky Quartz. Rear
Rear
Sceptered Quartz (Amethyst) and smoky Quartz. Top
Top
Sold
Schorl with Beryl (Aquamarine)
Schorl with Beryl (Aquamarine). Schorl with Beryl (Aquamarine).

TP90S5: Crystals of Schorl formed by a single prism, a ditrigonal prism and the terminal faces of a rhombohedron. These faces are polycrystalline and partially skeletal, the walls of the edges being very well marked. The Schorl is with intense blue crystals of Beryl (Aquamarine), very transparent and bright.
Erongo Mountain, Usakos-Omaruru, Erongo  Namibia (1995)

Specimen size: 8.2 × 7.7 × 5.4 cm = 3.2” × 3.0” × 2.1”

Main crystal size: 5 × 3 cm = 2.0” × 1.2”

With handwritten label from the Desmond Sacco Collection


Sold
Shattuckite with Malachite and Quartz

TH89S5: Crustal and globular growths of Shattuckite with a felted surface and a very uniform and intense blue color, with aggregates of acicular crystals of Malachite, on a Quartz matrix.
Kaokoveld Mine, Kaokoveld, Kunene  Namibia (2007)

Specimen size: 9.8 × 6.7 × 5.4 cm = 3.9” × 2.6” × 2.1”

With handwritten label from the Desmond Sacco Collection


Shattuckite with Malachite and Quartz.
Shattuckite with Malachite and Quartz. Shattuckite with Malachite and Quartz.
Sold
Malachite
Malachite. Malachite.

TZ16S5: Globular aggregates of small crystals of Malachite that have very well defined faces and edges and are bright and of a deep dark green color. On a matrix of massive Cuprite.
Tsumeb Mine, Tsumeb  Namibia (±1987)

Specimen size: 7.5 × 3.7 × 3.7 cm = 3.0” × 1.5” × 1.5”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

With handwritten label from the Desmond Sacco Collection


Sold
Malachite with Mimetite

TT16S5: Very well defined globular growths of Malachite that have a very intense grass-green color, with small aggregates of white crystals of Mimetite, a very unusual association, and small milky crystals of Smithsonite.
Tsumeb Mine, Tsumeb  Namibia

Specimen size: 6.3 × 5.2 × 2.9 cm = 2.5” × 2.0” × 1.1”

With handwritten label from the Desmond Sacco Collection

Mimetite minor fluorescence long & short UV

Malachite with Mimetite. Malachite with Mimetite.
Order

THE JAN BUMA COLLECTION


Carles Curto Text: Carles Curto (curator of the Geology Museum, Barcelona ) & Jordi Fabre
Assistance from John S. White (former Smithsonian curator) John S. White

 


Jan Buma, apart from being a great person, is a Dutch mineral collector who is very well known at most of the European shows since for many years he has attended them with great dedication. At these shows he bought a large number of specimens, initially all types of worldwide minerals, and then only in the three key areas of his collection: Fluorite, Rumania, Indian Zeolites and related species.

I have kept up a long friendship with Jan, which started many years ago at a Munich show. Back then I sold him one of the first specimens from the Emilio Mine, which caught his attention as it was a new locality at that time. Since then we have always kept in touch and done regular deals. So, when he sold his worldwide collection of minerals I had the opportunity and good luck of buying it. Some time later Jan decided to concentrate on an even more select range of minerals: just one, in fact - Fluorite. So he then sold his collection of Indian Zeolites and Rumanian specimens. Once again I was lucky enough to have the chance of buying his collection of Indian minerals.

For each specimen Jan added a sheet with lots of information on it that we can send to the buyer. The specimens are very commercial, appealing, and well priced, which is really pleasing since Jan had a good eye when buying minerals and was buying a lot of material at a time when the prices were far less expensive than they are today.

THE FLUORITE COLLECTION

In 2004 Jan Buma decided to concentrate on only high quality Fluorite specimens, so he decided to sell off most of his Fluorites, keeping just a select few. Jan decided to separate the Fluorites he had for sale into two groups: ones that were easier to sell, as the specimens were relatively cheap and they were of interest because of the localities they came from; the second were the better specimens, in which the range of locations and the good quality were both noteworthy. At the end of 2010, Jan Buma, after having built yet another excellent collection of Fluorite, decided to sell his entire collection, including his best pieces.

Both the quality of the specimens, and the range of localities makes this a really interesting collection. Each specimen is very well documented, as it comes with a record on which Jan noted details of the mineral, the locality, when he bought it, who he bought if from, and how much he paid. We believe that the material from this collection should be of interest to both Fluorite collectors and to those who collect a wide range of high quality minerals, especially considering the excellent quality and reasonable prices of Jan's collection.

Given the large number of specimens in the Buma collections I could not manage them all at the same time, so I put them into stock with the aim of selling them slowly through the Internet and shows that we attend.

We hope that you enjoy these specimens from the Jan Buma Collection as much as we have enjoyed them.

Jordi Fabre

Fluorite with Wulfenite
Fluorite with Wulfenite. Fluorite with Wulfenite.

FV16S5: Compact aggregate of clear green crystals of Fluorite. They are octahedral, with polycrystalline growths on their faces, and with a second generation of deep violet small cubic crystals partially coated by yellow laminar crystals of Wulfenite, a very unusual association.
Toughnut Mine, Tombstone, Cochise County, Arizona  USA

Specimen size: 7.5 × 5.4 × 3.7 cm = 3.0” × 2.1” × 1.5”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”

Fluorescent long & short UV

Former Jan Buma collection. Number 960909

Order
Fluorite with Quartz

FE14S5: Isolated crystal of Fluorite, neatly cubic and beveled, unusual for Azusa, where the most typical form is the octahedron or cuboctahedron. The crystal, between translucent and transparent, is clear green and it is on a Quartz matrix.
Felix Mine, Azusa, Los Angeles County, California  USA (±1999)

Specimen size: 7.6 × 4.2 × 2.7 cm = 3.0” × 1.7” × 1.1”

Main crystal size: 1.1 × 1 cm = 0.4” × 0.4”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 991001

Fluorite with Quartz. Fluorite with Quartz.
Sold
Fluorite with Quartz
Fluorite with Quartz. Fluorite with Quartz.
Fluorite with Quartz

FX6S5: Aggregate of cubic crystals of Fluorite of intense sky blue color, with perimorphic growths of white microcrystalline Quartz. The sample is with a label of the collection of H.P. Obboda that we'll send to the buyer together with the Buma label.
Galena King Mine, Tijeras Canyon, Bernalillo County, New Mexico  USA

Specimen size: 6 × 4.4 × 1.8 cm = 2.4” × 1.7” × 0.7”

Main crystal size: 1.2 × 1.1 cm = 0.5” × 0.4”

Former Jan Buma collection. Number 010610

Sold
Fluorite with Celestine

FG46S5: Very sharp cubic crystals of Fluorite with very well defined faces and edges, of clear lilac color, whose base is a parallel growth of white tabular crystals of Celestine.
Tule Mine, Melchor Mϊzquiz, Coahuila  Mexico

Specimen size: 15 × 8.1 × 2.2 cm = 5.9” × 3.2” × 0.9”

Main crystal size: 1.6 × 1.1 cm = 0.6” × 0.4”

Former Jan Buma collection. Number 970906

Fluorite with Celestine. Fluorite with Celestine.
Sold
Fluorite with Barite
Fluorite with Barite. Fluorite with Barite.

FH9S5: Globular growths of translucent, clear lilac Fluorite that are partially coated by transparent tabular crystals of barite of uniform and vivid yellow color.
Rock Candy mine, Grand Forks, British Columbia  Canada

Specimen size: 6.2 × 5.3 × 2.2 cm = 2.4” × 2.1” × 0.9”

Main crystal size: 2 × 1.5 cm = 0.8” × 0.6”

Fluorescent long & short UV

Former Jan Buma collection. Number 040211

Sold
Fluorite with Pyrite and Galena

FJ61S5: Translucent cubic crystals of Fluorite. They are bright, with very well defined faces and edges, with cubic crystals of Pyrite and on a matrix of Galena. The sample is from a not so well known mine near Alston Moor.
Rampgill Mine, Nenthead, Alston Moor, Cumbria, England  United Kingdom

Specimen size: 7.5 × 4.6 × 1.7 cm = 3.0” × 1.8” × 0.7”

Main crystal size: 0.7 × 0.7 cm = 0.3” × 0.3”

Former Jan Buma collection. Number 030811

Fluorite with Pyrite and Galena. Fluorite with Pyrite and Galena.
Sold
Fluorite
Fluorite.

FB26S5: Aggregate of cubic crystals of very well defined faces and edges, translucent, of uniform green color and on a base of white Quartz.
Maxonchamp, Remiremont, Vosges, Lorraine  France

Specimen size: 9.5 × 6.7 × 2.4 cm = 3.7” × 2.6” × 0.9”

Main crystal size: 2 × 1.8 cm = 0.8” × 0.7”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 981029

Sold
Fluorite with Siderite

FA86S5: Very sharp cubic crystals of very well defined faces and edges, translucent, of uniform yellow color and with white inclusions. The crystals are very isolated, which is uncommon for the samples from this locality, and they are on a matrix of Siderite.
Terne Grosse, Peyrebrune, Rιalmont, Tarn  France (06/2000)

Specimen size: 9.6 × 6.6 × 4.2 cm = 3.8” × 2.6” × 1.7”

Main crystal size: 2 × 1.5 cm = 0.8” × 0.6”

Fluorescent long & short UV

Former Jan Buma collection. Number 011054

Fluorite with Siderite. Fluorite with Siderite.
Sold
Fluorite with Calcite and Marcasite
Fluorite with Calcite and Marcasite. Fluorite with Calcite and Marcasite.

MZ7S5: Excellent sample for the locality. The cubic crystals, translucent and of a uniform yellow color, are on a matrix with white rhombohedral crystals of Calcite and small coatings of Marcasite with the shape so called "cook's comb".
Silius, Cagliari, Sardegna  Italy

Specimen size: 13.1 × 9.8 × 4.9 cm = 5.2” × 3.9” × 1.9”

Main crystal size: 1.4 × 1.2 cm = 0.6” × 0.5”

Fluorescent long & short UV

Former Jan Buma collection. Number 070910

Sold
Octahedral Fluorite with Quartz

MV47S5: A crystal of considerable size for the locality. It is octahedral, with polycrystalline growths on its faces, having an intense and deep green color. It is on a base of Quartz crystals.
Mina Huallapon, Pasto Bueno, Pallasca, Ancash  Peru

Specimen size: 8.9 × 8.5 × 8.3 cm = 3.5” × 3.3” × 3.3”

Very fluorescent long & short UV

Former Jan Buma collection. Number 040317

Octahedral Fluorite with Quartz. Front
Front
Octahedral Fluorite with Quartz. Top
Top
Order
Calcite with Fluorite and Siderite
Calcite with Fluorite and Siderite. Calcite with Fluorite and Siderite.

FA13S5: Fanlike aggregates of very acute scalenohedral crystals of Calcite with cubic beveled crystals of Fluorite, very well defined, transparent, very bright and of a very clear blue color. On some of the Calcite crystals some small growths of Siderite have grown.
Mina Huanzala, Huallanca, Dos de Mayo, Huαnuco  Peru (±2003)

Specimen size: 10.2 × 10.1 × 5.9 cm = 4.0” × 4.0” × 2.3”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”

Fluorescent long & short UV

Former Jan Buma collection. Number 030907

Sold
Fluorite with Quartz

MT76S5: Clear green beveled cubic crystals with geometrical zoning of deep violet shades on the bevels and in the center of the crystal. They are with crystals of Quartz. Being the first samples to arrive from China, the locality is very imprecise, and our efforts to match it have been fruitless due the unusual aspect of the sample.
Jiangxi  China

Specimen size: 8.3 × 5.3 × 2.4 cm = 3.3” × 2.1” × 0.9”

Main crystal size: 1 × 0.7 cm = 0.4” × 0.3”

Former Jan Buma collection. Number 070703

Fluorite with Quartz. Fluorite with Quartz.
Sold
Fluorite
Fluorite.
Fluorite. Fluorite.

FB76S5: On the sample three generations if crystals coexist. The first one, octahedral, shows very well defined faces and edges and it is dark green. The second, also octahedral, is intense clear green, and the last shows small cubic crystals, colorless and bright.
Xianghualing, Linwu County, Chenzhou, Hunan  China (±2003)

Specimen size: 8.2 × 5.4 × 4.7 cm = 3.2” × 2.1” × 1.9”

Main crystal size: 1.8 × 1.8 cm = 0.7” × 0.7”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 030403

Sold
Octahedral Fluorite with Muscovite, Schorl, Fluorapatite and Beryl

FM64S5: Clear green octahedral crystal of Fluorite on a Muscovite matrix, with a colorless very well defined crystal of Fluorapatite and acicular inclusions of Schorl.
Chumar Bakor, Nagar, Hunza Valley, Gilgit-Baltistan  Pakistan (±1999)

Specimen size: 4.8 × 3.7 × 5.2 cm = 1.9” × 1.5” × 2.0”

Main crystal size: 4 × 2.7 cm = 1.6” × 1.1”

Fluorescent long & short UV

Former Jan Buma collection. Number 990631

Octahedral Fluorite with Muscovite, Schorl, Fluorapatite and Beryl.
Sold


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