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September 2011 Update

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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 Calcite
Fluorite with Calcite.

FJ13T3: Aggregate of violet cubic crystals of Fluorite, transparent and with very well marked color zoning, parallel to the edges, and with acute scalenohedral crystals of Calcite.
Auglaize Quarry, Junction, Paulding County, Ohio  USA

Specimen size: 4.4 × 4.3 × 2.2 cm = 1.7” × 1.7” × 0.9”

Main crystal size: 2.2 × 1 cm = 0.9” × 0.4”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 030103

Order
Fluorite with Quartz and Orthoclase

MH6T3: Aggregate of octahedral crystals with very well defined faces and edges, very transparent, with clear green color and on matrix of Quartz and Orthoclase.
The sample, a classic, is from Jan Buma’s collection, whose card, and a previous label from Gianguido Giannobi’s collection, we’ll send to the buyer.
Baveno, Verbano-Cusio-Ossola, Piemonte  Italy

Specimen size: 5.1 × 4 × 2.6 cm = 2.0” × 1.6” × 1.0”

Main crystal size: 0.9 × 0.8 cm = 0.4” × 0.3”

Fluorescence short UV & low fluorescence long UV

Former Jan Buma collection. Number 060605

Fluorite with Quartz and Orthoclase. Front
Front
Fluorite with Quartz and Orthoclase. Side
Side
Sold
Octahedral Fluorite with smoky Quartz
Octahedral Fluorite with smoky Quartz. Octahedral Fluorite with smoky Quartz.

FH66T3: Group of octahedral crystals of Fluorite, with very well defined faces and edges and clear lilac color, very unusual for the samples from the area. They are on matrix, with smoky Quartz and Albite.
Fellital, Aar Massif, Uri  Switzerland

Specimen size: 9 × 8.6 × 3.9 cm = 3.5” × 3.4” × 1.5”

Main crystal size: 1.3 × 1.3 cm = 0.5” × 0.5”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 030903

Order
Fluorite with Quartz

FJ11T3: Globular growths, on matrix, of yellow crystals with slightly defined faces and edges. More bright and colorful than usual for the samples from this locality.
Buxieres les Mines, Allier, Auvergne  France (±1989)

Specimen size: 8.6 × 5.6 × 2.4 cm = 3.4” × 2.2” × 0.9”

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

Fluorescent long & short UV

Former Jan Buma collection. Number 890902

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

FA11T3: Aggregate of translucent lilac cubic crystals. The sample, as is usual for a lot of samples in Buma’s collection, is from a poorly known English mine in Durham County.
Leonard's Hush, Middleton-in-Teesdale, Teesdale, Durham, England  United Kingdom

Specimen size: 6.7 × 4.7 × 3.9 cm = 2.6” × 1.9” × 1.5”

Main crystal size: 2.1 × 1.6 cm = 0.8” × 0.6”

Very fluorescent long & short UV

Former Jan Buma collection. Number 020859

Sold
Fluorite with Calcite, Chalcopyrite and Sphalerite

FP36T3: Aggregate of sharp cubic crystals of Fluorite, on matrix and partially coated by small crystals of Chalcopyrite, with yellow scalenohedral crystals of Calcite and complex crystals of Sphalerite. An English classic.
Ladywash Mine, Eyam, Derbyshire, England  United Kingdom

Specimen size: 13.7 × 11.4 × 7 cm = 5.4” × 4.5” × 2.8”

Calcite minor fluorescence long & short UV

Former Jan Buma collection. Number 790881

Euro: 140 / US$ 183 / Yen: 14740
Fluorite with Calcite, Chalcopyrite and Sphalerite. Fluorite with Calcite, Chalcopyrite and Sphalerite.
Reservado
Fluorite with Barite, Chalcopyrite and Calcite
Fluorite with Barite, Chalcopyrite and Calcite. Fluorite with Barite, Chalcopyrite and Calcite.

FM88T3: Aggregate of very sharp cubic crystals of Fluorite. Of lilac color, they are partially coated by small crystals of Chalcopyrite and they are with white, very acute, scalenohedral crystals of Calcite and laminar Barite. The sample is very typical of this classic German mining area.
Wφlsendorf, Schwandorf, Oberpfalz, Bavaria  Germany

Specimen size: 21 × 14 × 5.5 cm = 8.3” × 5.5” × 2.2”

Main crystal size: 1.5 × 1.1 cm = 0.6” × 0.4”

Fluorescent long & short UV

Former Jan Buma collection. Number 990308

Order
Fluorite with Calcite
Fluorite with Calcite

MT96T3: Aggregate of cubic crystals with echeloned growths on the corners. Crystals are bright, transparent and have a very intense and deep green color, darker on the corners.
Okorusu Mine, Otjiwarongo District  Namibia

Specimen size: 8.4 × 7.6 × 4.1 cm = 3.3” × 3.0” × 1.6”

Main crystal size: 1.8 × 1.7 cm = 0.7” × 0.7”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 070607

Fluorite with Calcite. Fluorite with Calcite.
Order
Fluorite with Pyrite, Sphalerite and Quartz
Fluorite with Pyrite, Sphalerite and Quartz. Fluorite with Pyrite, Sphalerite and Quartz.

FV63T3: Group of very sharp cubic crystals of Fluorite that show a uniform and clear green color and have inclusions of Sphalerite and Pyrite and are partially coated by microcrystalline Quartz. The matrix is a group of very well defined crystals of Sphalerite, with small crystals of Pyrite and with Quartz on the base of the piece.
Mina Huanzala, Huallanca, Dos de Mayo, Huαnuco  Peru (±1999)

Specimen size: 5.7 × 4.4 × 3.3 cm = 2.2” × 1.7” × 1.3”

Main crystal size: 1.6 × 1.3 cm = 0.6” × 0.5”

Fluorescent long & short UV

Former Jan Buma collection. Number 990301

Order
Fluorite with Barite, Pyrite and Calcite

FP60T3: Echeloned growths of cubic crystals of Fluorite that are transparent and practically colorless. On matrix, with small crystals of Pyrite, white laminar Barite and scoriaceous Calcite that is intensely fluorescent.
Mina Huanzala, Huallanca, Dos de Mayo, Huαnuco  Peru (±2005)

Specimen size: 11.4 × 5.8 × 4.9 cm = 4.5” × 2.3” × 1.9”

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

Calcite extremely fluorescent long & short UV

Former Jan Buma collection. Number 050402

Fluorite with Barite, Pyrite and Calcite. Fluorite with Barite, Pyrite and Calcite.
Order
Fluorite with Ferberite, Calcite and Quartz
Fluorite with Ferberite, Calcite and Quartz. Front
Front
Fluorite with Ferberite, Calcite and Quartz. Side
Side
Fluorite with Ferberite, Calcite and Quartz. Side
Side

MT67T3: Very well defined and partially doubly terminated crystal of Ferberite almost completely coated by clear lilac and transparent cubic crystals of Fluorite with uniaxial growths of white lenticular crystals of Calcite and crystals of Quartz.
Yaogangxian Mine, Yizhang, Chenzhou, Hunan  China (±2003)

Specimen size: 10.4 × 7.7 × 3.3 cm = 4.1” × 3.0” × 1.3”

Main crystal size: 1 × 0.8 cm = 0.4” × 0.3”

Fluorescence short UV & low fluorescence long UV

Former Jan Buma collection. Number 030624

Sold
Fluorite with Albite (Pericline), Spessartine and Muscovite

FG76T3: Cubo-octahedral crystals of Fluorite with echeloned growths, and with transparent crystals of Spessartine on their surface, on a matrix with twinned crystals of Albite (Pericline) and leafy growths of Muscovite. We especially note the locality where samples of crystallized Fluorite are really scarce.
Yuno Mine, Shigar Valley, Baltistan  Pakistan (±2002)

Specimen size: 9.3 × 6.4 × 2.9 cm = 3.7” × 2.5” × 1.1”

Main crystal size: 1.7 × 1.2 cm = 0.7” × 0.5”

Fluorescence short UV & low fluorescence long UV

Former Jan Buma collection. Number 021023

Fluorite with Albite (Pericline), Spessartine and Muscovite. Fluorite with Albite (Pericline), Spessartine and Muscovite.
Order

Apophyllite-(KF) with Okenite
Apophyllite-(KF) with Okenite.

JH7T3: Short prismatic crystals with small polycrystalline terminations, of uniform clear green color and on a matrix of Okenite.
Jalgaon, Maharashtra  India (±2001)

Specimen size: 4.7 × 2.8 × 2.3 cm = 1.9” × 1.1” × 0.9”

Main crystal size: 1.5 × 1.4 cm = 0.6” × 0.6”

Former Jan Buma collection. Number 010423

Sold
Apophyllite-(KF) with Quartz and Stilbite

JE57T3: Very acute doubly terminated crystals of Apophyllite-(KF), very bright and colorless, with slightly pink laminar crystals of Stilbite and implanted on a stalactitic Quartz.
Jalgaon, Maharashtra  India (±1998)

Specimen size: 5.8 × 3.4 × 1.7 cm = 2.3” × 1.3” × 0.7”

Main crystal size: 1.2 × 0.3 cm = 0.5” × 0.1”

Former Jan Buma collection. Number 980709

Apophyllite-(KF) with Quartz and Stilbite.
Sold
Apophyllite-(KF) with Quartz
Apophyllite-(KF) with Quartz. Front
Front
Apophyllite-(KF) with Quartz. Rear
Rear

JD58T3: Acute doubly terminated dipyramidal crystals of Apophyllite-(KF), colorless and transparent, they are implanted on a stalactitic growth of Quartz and with recrystallizations, also of Quartz, and small laminar crystals of Stilbite.
Jalgaon, Maharashtra  India (±2001)

Specimen size: 10.4 × 6.7 × 4.4 cm = 4.1” × 2.6” × 1.7”

Main crystal size: 2.7 × 1.7 cm = 1.1” × 0.7”

Former Jan Buma collection. Number 010423

Sold
Calcite

JE13T3: Rhombohedral crystals of Calcite with slightly curved faces and edges. They are translucent, bright and have a uniform yellow color and are on a matrix of botryoidal Quartz (Chalcedony).
Bombay District, Maharashtra  India (±2001)

Specimen size: 13.9 × 9.4 × 3.2 cm = 5.5” × 3.7” × 1.3”

Main crystal size: 4.3 × 2.7 cm = 1.7” × 1.1”

Former Jan Buma collection. Number 011122

Calcite. Calcite.
Order
Calcite with Stilbite and Apophyllite-(KF)
Calcite with Stilbite and Apophyllite-(KF). Front
Front
Calcite with Stilbite and Apophyllite-(KF). Rear
Rear
Calcite with Stilbite and Apophyllite-(KF).

JA37T3: Floater rhombohedral crystal with slightly curved faces and edges and partially coated by white laminar crystals of Stilbite and equidimensional crystals of Apophyllite-(KF) with a very well marked color zonibg, green in the center of the prisms and colorless on the terminations.
Poona, Maharashtra  India

Specimen size: 14.8 × 10.2 × 5.2 cm = 5.8” × 4.0” × 2.0”

Former Jan Buma collection. Number 020849

Sold


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