Fabre Minerals
FABRE MINERALS
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Bringing you selected collectible minerals since 1971
Fabre Minerals


August 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. Front
Front
Fluorite with Calcite. Rear
Rear
Fluorite with Calcite.

MX14T1: Group of cubic crystals of Fluorite, with dissolution forms, and a very deep, intense and uniform violet color. It is on matrix with scalenohedral crystals of Calcite that are extraordinarily acute, elongated and most of them doubly terminated.
Minerva I Mine, Cave-in-Rock, Hardin County, Illinois  USA

Specimen size: 7.2 × 4.2 × 2.2 cm = 2.8” × 1.7” × 0.9”

Calcite minor fluorescence long & short UV

Former Jan Buma collection. Number 060402

Sold
Calcite with Fluorite, Chalcopyrite and Quartz

MV27T1: Very aerial group of scalenohedral crystals of Calcite that are translucent, bright and slightly pinkish. On matrix, with a small group of clear green Fluorite crystals, Quartz and twinned crystals of Chalcopyrite.
Cavnic, Maramures  Rumania (±1999)

Specimen size: 7.4 × 7 × 3.7 cm = 2.9” × 2.8” × 1.5”

Calcite very fluorescent long & short UV / Fluorite fluorescent long & short UV

Former Jan Buma collection. Number 991036

Calcite with Fluorite, Chalcopyrite and Quartz. Front
Front
Calcite with Fluorite, Chalcopyrite and Quartz. Rear
Rear
Calcite with Fluorite, Chalcopyrite and Quartz.
Sold
Fluorite with Euclase and Quartz
Fluorite with Euclase and Quartz. Front
Front
Fluorite with Euclase and Quartz. Side
Side

MC27T1: Group of octahedral crystals of Fluorite with echeloned growths on their faces. They are blue, are on a group of Quartz crystals and have a nucleus of Euclase crystals that are sharp, translucent and very bright. A very unusual association.
Piaotang Mine, Dayu, Jiangxi  China (±2009)

Specimen size: 6.9 × 6.7 × 5.2 cm = 2.7” × 2.6” × 2.0”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 090401

Sold
Fluorite with Quartz and Dolomite

MQ14T1: Small groups of cubic crystals of Fluorite, slightly violet, more intense on the edges, implanted on a group of white crystals of Quartz, most of them doubly terminated, and coated by small crystals of Dolomite.
Yaogangxian Mine, Yizhang, Chenzhou, Hunan  China (±2009)

Specimen size: 6.5 × 6.5 × 4.4 cm = 2.6” × 2.6” × 1.7”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 090402

Fluorite with Quartz and Dolomite. Front
Front
Fluorite with Quartz and Dolomite. Rear
Rear
Sold
Fluorite with Quartz and inclusions
Fluorite with Quartz and inclusions. Front
Front
Fluorite with Quartz and inclusions. Top
Top

MA86T1: Group of transparent cubic crystals with very sharp faces and edges, intense blue color and violet reflections and with white microcrystalline inclusions. Their matrix is a group of Quartz crystals some of them doubly terminated.
Yaogangxian Mine, Yizhang, Chenzhou, Hunan  China (±2007)

Specimen size: 6.4 × 3.9 × 3.8 cm = 2.5” × 1.5” × 1.5”

Main crystal size: 3.4 × 2.9 cm = 1.3” × 1.1”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 070906

Sold
Fluorite on Quartz

MR17T1: A Fluorite crystal formed by cube and octahedron faces, very well equilibrated. The cube faces are smooth and clear while the octahedron faces are rough and deep violet in color. The Fluorite crystal is implanted on a Quartz crystal.
Yaogangxian Mine, Yizhang, Chenzhou, Hunan  China (2003)

Specimen size: 6.6 × 3.9 × 4.5 cm = 2.6” × 1.5” × 1.8”

Main crystal size: 3.9 × 3.6 cm = 1.5” × 1.4”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 061202

Fluorite on Quartz. Front
Front
Fluorite on Quartz. Side
Side
Order
Fluorite with Quartz
Fluorite with Quartz. Fluorite with Quartz.

MX27T1: Group of transparent cubic crystals with very well defined faces and edges and a pale green color with small areas of intense and deep violet color. On matrix, with small crystals of Quartz.
Xianghuapu Mine, Linwu, Chenzhou, Hunan  China (±2001)

Specimen size: 11.8 × 11.4 × 3.6 cm = 4.6” × 4.5” × 1.4”

Main crystal size: 1.7 × 1.6 cm = 0.7” × 0.6”

Minor fluorescence long UV

Former Jan Buma collection. Number 011039

Order
Fluorite with Muscovite, Quartz and Arsenopyrite

MG68T1: Group of crystals formed by the dominant faces of the cube, beveled by the dodecahedron and truncated by an octahedron that is poorly defined and has curvatures and is rough surfaced. It is on matrix, and has been sawn on the back to give a good balance to the sample. With Muscovite, white Quartz and small crystals of Arsenopyrite.
Yaogangxian Mine, Yizhang, Chenzhou, Hunan  China (10/2006)

Specimen size: 12.6 × 8.8 × 4.6 cm = 5.0” × 3.5” × 1.8”

Main crystal size: 2.8 × 2.2 cm = 1.1” × 0.9”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 070302

Fluorite with Muscovite, Quartz and Arsenopyrite. Fluorite with Muscovite, Quartz and Arsenopyrite.
Order
Fluorite with inclusions
Fluorite with inclusions. Front
Front
Fluorite with inclusions. Rear
Rear

MD67T1: An especially esthetic group of transparent cubic crystals. They are bright and have an intense and uniform green color and inclusions that are oriented as phantom growths. The sample is especially elegant, due to its arched shape.
Xianghuapu Mine, Linwu, Chenzhou, Hunan  China (±2007)

Specimen size: 9.2 × 8.7 × 3.3 cm = 3.6” × 3.4” × 1.3”

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

Former Jan Buma collection. Number 070605

Sold


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