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Mineral Specimens with Wurtzite
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1.1 x 0.9 x 0.4 cm. A RARE, EXCELLENT, wurtzite CRYSTAL from the famous Siglo XX Mine at Llallagua, Bolivia. This is a really sharp, pseudo-hexagonal crystal, usually found only as crusts or botryoidal masses at other worldwide localities. Ex. George Elling Collection.
7.5 x 7.2 x 4.3 cm. Sharp, battleship-gray, twinned bournonite crystals richly and attractively cover the upper portion of this fine combination specimen, along with black wurtzite crystals. Ex. Scott Williams and George Elling Collections.
2.6 x 1.8 x 1.3 cm. This piece features several highly lustrous, sharp, deep reddish-brown, platy hexagonal crystals measuring up to 11 mm associated with white Calcite.
2.4 x 2.0 x 1.8 cm. This piece features several highly lustrous, sharp, deep brownish-red, platy hexagonal crystals measuring up to 7 mm associated with white Calcite and minor Chalcopyrite.
6.6 x 3.6 x 3.0 cm. This is a very good specimen of wurtzite from the Tri-State District, at the turn-of-the-1900s. Ex. Dr. A.E. Foote, St. Ignatius College Museum, Hugh Ford, Robert Fitton, and George Feist Collections.
2.6 x 2.1 x 1.8 cm. Wurtzite is an uncommon zinc, iron sulfide, seldom found in well-developed crystals. This fine features a multitude of sharp, hexagonal, submetallic wurtzite crystals on massive wurtzite matrix from the famous Siglo XX Mine at Llallagua, Bolivia. Ex. George Elling Collection.
4.6 x 2.8 x 3.4 cm. Collected from one of the famous Vaux expeditions of the early 1900's, this is a rare matrix teallite specimen featuring a pocket-growth teallite crystal measuring 1.3 cm long, perched safely in a protected vug of wurtzite crystals, all in a matrix of cassiterite ore. The slender yellow crystals are "needle tin". Ex. Philadelphia Academy of Sciences Collection.
5.0 x 3.8 x 2.4 cm. A scintillating, plumose spray of hexagonal, partially gemmy, wurtzite prisms from the classic locality of Pribram. Wurtzite is an uncommon zinc, iron sulfide. There are super flashy points of gemmy, golden-yellow to red fire on this showy piece. Both ends are contacted, but this is a very highly representative specimen of the species and locale.
8.3 x 6.3 x 1.9 cm. Wurtzite is one of those rather simple sulfides that few people see in well crystallized specimens. The species was named for French chemist Charles Wurtz in the mid-1800s. The San Jose mine (and various other mines in Bolivia) has produced some of the largest Wurtzite specimens extant. This mine is also the type locality for Wurtzite as well. This specimen consists of several sharp, lustrous dark chocolate-brown crystals on matrix. The important aspect of this specimen is that these are actual crystals and not small massive "blebs".
3.0 x 2.2 x 2.1 cm. Wurtzite is an uncommon zinc, iron sulfide, seldom found in well-developed crystals. This fine specimen features booklets of sharp, hexagonal, submetallic wurtzite crystals aesthetically set on quartz matrix and accented with brassy chalcopyrite from the Siglo Veinte Mine at Llallagua, Bolivia. The wurtzite crystal clusters look like classic, textbook hematite "iron roses". The important aspect of this specimen is that these are actual crystals and not small massive "blebs". Ex. Dick Jones Collection.
9.2 x 8.6 x 3.5 cm. A very interesting and unique Wurtzite specimen. The piece consists of lustrous, chocolate brown, crystallized "casts" after an unknown mineral which are associated with bright silvery Galena crystals on matrix. These specimens came out around 2002, and I only saw a few of them. I was never able to obtain an accurate locality, but it is certainly attractive for the species, and one of the most unusual Wurtzites that I have seen from Bolivia.
6.6 x 4.2 x 3.5 cm. Scintillating, hexgonal, black to gemmy golden-yellow wurtzite prisms in parallel-growth richly cover the undulating matrix of massive sulfides. Wurtzite is an uncommon zinc, iron sulfide, a polymorph of sphalerite and is seldom found in well-developed crystals worldwide. Wurtzite is usually found as crusts or blebs, so this is outstanding material. Classic material from the famous and ancient Les Malines Mine of Gard, France and according to the label was collected in 1992. Ex. Wes Parker Collection.
5.0 x 3.6 x 2.0 cm. A classic and fine Wurtzite specimen from one of the most classic Bolivian localities extant. The piece consists of lustrous, metallic brown, very well-crystallized, textbook hexagonal "rosettes" of Wurtzite measuring up to 6 mm on matrix. This piece comes from the collection of the well known and now deceased Colorado geologist Allen Heyl (Aheylite) and was apparently in Martin Zinn's collection at one point according to the accompanying label.
2.3 x 1.8 x 1.4 cm. Wurtzite is a relatively uncommon zinc, iron sulfide. It usually occurs as massive ore or as banded, botryoidal crusts. It is very rare as displayed in the sharp, hexagonal, stacked, tabular crystals on massive wurtzite matrix on this superb thumbnail from the Dick Jones Collection. The lustrous crystals have a nice purple iridescence to them. This classic, old-time specimen, dating to the 1960s or 1970s, is from the Siglo XX Mine of Bolivia.
Wurtzite is one of those rather simple sulfides that few people see in well crystallized specimens. The San Jose mine (and various other mines in Bolivia) have produced some of the largest Wurtzite specimens extant. This specimen consists of several sharp, lustrous dark reddish-brown crystals on matrix. The important aspect of this specimen is that these are actual crystals and not small massive "blebs". 5.2 x 3.1 x 3.0cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-118488a.jpg]](db_pics/mdpics/m/MD-118488a.jpg)
![Wurtzite, Bournonite from Les Malines District, Saint-Laurent-le-Minier, Gard, Languedoc-Roussillon, France [db_pics/mdpics/MD-132442a.jpg]](db_pics/mdpics/MD-132442a.jpg)
![Wurtzite, Bournonite from Les Malines District, Saint-Laurent-le-Minier, Gard, Languedoc-Roussillon, France [db_pics/mdpics/MD-132442b.jpg]](db_pics/mdpics/MD-132442b.jpg)
![Wurtzite from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-176485a.jpg]](db_pics/mdpics/MD-176485a.jpg)
![Wurtzite from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-176683a.jpg]](db_pics/mdpics/MD-176683a.jpg)
![Wurtzite from Joplin Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-177441a.jpg]](db_pics/mdpics/MD-177441a.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-179416a.jpg]](db_pics/mdpics/MD-179416a.jpg)
![Teallite, Wurtzite, Cassiterite from Ichocollo Mine (Ichucollo Mine; Monserrat Mine), Monserrat-Antequera district, Pazña, Poopó Province, Oruro Department, Bolivia [db_pics/mdpics/MD-199632a.jpg]](db_pics/mdpics/MD-199632a.jpg)
![Teallite, Wurtzite, Cassiterite from Ichocollo Mine (Ichucollo Mine; Monserrat Mine), Monserrat-Antequera district, Pazña, Poopó Province, Oruro Department, Bolivia [db_pics/mdpics/MD-199632b.jpg]](db_pics/mdpics/MD-199632b.jpg)
![Wurtzite from Příbram, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic [db_pics/mdpics/MD-209874a.jpg]](db_pics/mdpics/MD-209874a.jpg)
![Wurtzite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/mdpics/MD-239870a.jpg]](db_pics/mdpics/MD-239870a.jpg)
![Wurtzite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/mdpics/MD-239870b.jpg]](db_pics/mdpics/MD-239870b.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-240009a.jpg]](db_pics/mdpics/MD-240009a.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-240009b.jpg]](db_pics/mdpics/MD-240009b.jpg)
![Wurtzite from Potosí Department, Bolivia [db_pics/mdpics/MD-245570a.jpg]](db_pics/mdpics/MD-245570a.jpg)
![Wurtzite from Potosí Department, Bolivia [db_pics/mdpics/MD-245570b.jpg]](db_pics/mdpics/MD-245570b.jpg)
![Wurtzite from Les Malines District, Saint-Laurent-le-Minier, Gard, Languedoc-Roussillon, France [db_pics/mdpics/MD-256908a.jpg]](db_pics/mdpics/MD-256908a.jpg)
![Wurtzite from Les Malines District, Saint-Laurent-le-Minier, Gard, Languedoc-Roussillon, France [db_pics/mdpics/MD-256908b.jpg]](db_pics/mdpics/MD-256908b.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-257282a.jpg]](db_pics/mdpics/MD-257282a.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-257282b.jpg]](db_pics/mdpics/MD-257282b.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-275040a.jpg]](db_pics/mdpics/MD-275040a.jpg)
![Wurtzite from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia [db_pics/mdpics/MD-275040b.jpg]](db_pics/mdpics/MD-275040b.jpg)
![Wurtzite from San José Mine, Oruro City, Cercado Province, Oruro Department, Bolivia [db_pics/mdpics/MD-49182a.jpg]](db_pics/mdpics/MD-49182a.jpg)