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Mineral Specimens with Hydroxylherderite
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From a new find, these unusual matrix herderites are really interesting for the stark contrast to matrix they seem to just "pop" out of. This large feldspar crystal has an inset single crystal of lavender-colored herderite, 3.4 x 3 x 2 cm in size. The crystal is fairly translucent even in normal lighting but glows more colorfully with even just a bit of backlighting. It is complete and undamaged. A very nice specimen from a novel find at a new locale in this area. Note that these just came out, and I am throwign on the web "as is." Obviously, trimmed up a bit, this could size down to a killer small cab. As is, though, I thought it a shame to break such an unusual feldspar crystal just to make the overall piece smaller so it fits in more specimen cabinets.
Lustrous, translucent, VERY 3-dimensional herderites to 3 cm are strung along the top of this feldspar like grapes. It is a most unusual matrix specimen for this species - and such nice purple crystals rarely occur on matrix, for that matter. The largest crystal has a single small ding on one upper edge as shown in the close-up (which shows it as head-on as possible to be frank about it - it snot so obvious in person!), but displayed properly with a slight tilt, that is not really so noticeable from the display face (see whole picture, first shot). Tilted a bit forward, you can see in the later photo the 3-dimensionality of the crystals, and how isolated each crystal is - just smartly perched on the feldspar matrix. The muscovite is a very unusual, interestig, contrasting association. NEW FIND for this famous old gem district. This is a very fine and rare matrix purple herderite for the price, and its big and unrepaired as well
An approximately 2 x 2 x 1.5 cm SHARP lavender-colored crystal, smartly perched as it it were emerging from the matrix of feldspar. The crystal is 3-Dimensional, and complete all around, totally pristine. The matrix is actually a shard of a feldspar crystal, seemingly rehealed and complete all around. This is a very fine and rare matrix purple herderite for the price.
A sharp bladed hydroxylherderite crystal that is translucent around the edges and has a sharply defined twin plane as you see in the second photo. 6 x 4.6 x 1.2 cm
A VERY SHARP, pseudo-octahedral crystal measuring about 4 x 3 x 3 cm , perched upon a smaller crystal as a pedestal. Very elegant display, and a very unusual habit! 4.8 x 3.7 x 2.5 cm
From the famous 1969 pocket of purple hydroxylherderites, comes this very choice miniature on matrix of feldspar. The crystals are unusually gemmy and clean! The larger one measures 2 cm across. 4.5 x 3.3 x 3 cm
1.9 x 1.3 x 0.9 cm. These green Paki Hydroxylherderites were rather limited in the number found. This beautiful little thumbnail is comprised of a lovely light green color prismatic crystal with small gemmy areas and sharp, lustrous faces. It is associated with small gemmy, colorless Albite (?) crystals as well.
3.4 x 3.3 x 2.0 cm. Hydroxylherderite with lustrous, sharp faces. The color is a mix of a light green and yellow. This piece came from the Richard Kosnar collection, and his notes state that is was mined in 1970.
5.4 x 4.2 x 2.9 cm. A SUPERB, doubly terminated, gemmy and lustrous hydroxylherderite crystal from the famous Golconda Mine of Brazil. This glassy and classic beauty has a tan body and extremely gemmy, light brown terminations. The DT crystal is beautifully perched on a smaller hydroxylherderite. Neither the contacted end of the smaller hydroxylherderite or the barely noticeable, small contact on the large DT crystal diminishes the quality of this important specimen. This fine specimen probably dates to the 1950s to 1960s. It was a gift by Levon Nercessian, member of a well-known Rio de Janiero gem dealer family, to Dr. Fred Pough for his help to them. Such historic specimens from this locality are few and far between. Ex. George Elling Collection.
A TEXTBOOK hydroxylerderite crystal perched on matrix, exposed on all sides. It measures 1.4 cm tip to tip, has a pleasing light yellow-tan color, and sharp faces all around. 4.5 x 4 x 2.8 cm
5.3 x 3.5 x 3.4 cm. A rare, unique, and fine combination specimen from the Pack Rat Mine of San Diego County. A sharp, lustrous, doubly terminated, 2.3 cm, off-white hydroxylherderite crystal is perched on the side of two, intergrown, glassy and translucent, smoky quartz crystals. Older material from the Chuck Houser Collection and it also comes with a 1960s/1970s era Dawson’s Minerals label. Norm Dawson was the owner and operator of the White Queen Mine from 1948-1992.
8.2 x 7.1 x 5.0 cm. A very rare, unique and very showy herderite, tourmaline and lepidolite specimen from Paprok, Afghanistan and the Marty Zinn Collection, #7925. Gemmy, pastel-green, arrowhead-shaped herderite crystals abound on the matrix, which includes very gemmy, green tourmaline crystals to 2.1 cm and very light lavender to tan lepidolite crystals. The dominant 2.8 cm herderite crystal is striking and there is a 5.2 cm horizontal crystal. All of the major herderites are pristine. Herderite is not listed as coming from Afghanistan, but Marty has many direct sources, that very few in the mineral world can hope to obtain. Marty is generally considered to be the preeminent mineral show promoter in the world and thus has early access to many unique finds. The tourmalines appear to be a typical, green Paprok varietal and not like any general Brazilian tourmalines.
A superb cluster of gemmy and lustrous, doubly-terminated purple hydroxyl-herderite crystals from THE classic locality for such specimens. This find, dating to October of 1976, is recounted in interesting detail in the excellent book by Dr. Peter Bancroft Gem and Crystal Treasures on pages 207-208. These remain, years later, the best ever found of purple herderite, and the only Virgem de Lapa occurence as well. This choice display-quality miniature features an extraordinarily well-developed 2.5 cm crystal in its center. 4.2 x 3.7 x 2.7 cm
Lustrous and gemmy cream-colored flattened hydroxyl-herderite crystals to 1.9 cm aesthetically set on a bed of sparkly, tiny colorless hydroxyl-herderite needles, all of which are set on the top of a blocky albite crystal. A very nice display piece and from a VERY UNCOMMON Brazilian locality for this species until this small find of last year. 6.2 x 5.3 x 4.5 cm
4.1 x 1.8 x 1.5 cm. A really fine hydroxylherderite miniature from Virgem da Lapa and the Eric Asselborn Collection. A 2.4 cm, doubly terminated, lustrous, translucent, tan hydroxylherderite crystal has a strikingly angled, 4.1 cm, super-flattened, gem, indicolite crystal embedded on the side, with two more tourmaline sections set on the other side. It is a very rare association piece from an old find of the early 1970s or late 1960s.
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Rob Lavinsky, rob@irocks.com
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share specimen![Hydroxylherderite on Feldspar from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz01a.jpg]](db_pics/new09/xyz01a.jpg)
![Hydroxylherderite on Feldspar from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz01d.jpg]](db_pics/new09/xyz01d.jpg)
![Hydroxylherderite on Feldspar from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz01c.jpg]](db_pics/new09/xyz01c.jpg)
![Hydroxylherderite from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz02b.jpg]](db_pics/new09/xyz02b.jpg)
![Hydroxylherderite from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz02c.jpg]](db_pics/new09/xyz02c.jpg)
![Hydroxylherderite from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz03a.jpg]](db_pics/new09/xyz03a.jpg)
![Hydroxylherderite from Virgem da Lapa, Minas Gerais, Brazil [db_pics/new09/xyz03b.jpg]](db_pics/new09/xyz03b.jpg)
![Hydroxylherderite from Jove Lauriano claim (Joveni claim; Joventino claim), Linópolis, Divino das Laranjeiras, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-112486a.jpg]](db_pics/mdpics/MD-112486a.jpg)
![Hydroxylherderite from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-112783a.jpg]](db_pics/mdpics/MD-112783a.jpg)
![Hydroxylherderite from Xanda mine (Xandra mine), Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-112788a.jpg]](db_pics/mdpics/MD-112788a.jpg)
![Hydroxylherderite from Apo Ali Gun (Apaligun; Apaligon), Braldu Valley, Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-130914a.jpg]](db_pics/mdpics/MD-130914a.jpg)
![Hydroxylherderite from Araçuaí, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-139748a.jpg]](db_pics/mdpics/MD-139748a.jpg)
![Hydroxylherderite from Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-159543a.jpg]](db_pics/mdpics/MD-159543a.jpg)
![Hydroxylherderite from Bulochi (Balochi; Balche; Bulache; Bulachi; Drot Balachi), Astor valley (Astore valley), Astor District (Astore District), Northern Areas, Pakistan [db_pics/mdpics/MD-19050a.jpg]](db_pics/mdpics/MD-19050a.jpg)
![Hydroxylherderite, Quartz (Var: Smoky Quartz) from Pack Rat Mine, Mt. Tule, Jacumba District, San Diego Co., California, USA [db_pics/mdpics/MD-203270a.jpg]](db_pics/mdpics/MD-203270a.jpg)
![Hydroxylherderite, Elbaite, Lepidolite from Paprok, Nuristan Province (Nurestan; Nooristan), Afghanistan [db_pics/mdpics/MD-216407a.jpg]](db_pics/mdpics/MD-216407a.jpg)
![Hydroxylherderite, Elbaite, Lepidolite from Paprok, Nuristan Province (Nurestan; Nooristan), Afghanistan [db_pics/mdpics/MD-216407b.jpg]](db_pics/mdpics/MD-216407b.jpg)
![Hydroxylherderite from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-22011a.jpg]](db_pics/mdpics/MD-22011a.jpg)
![Hydroxylherderite, Albite from São Francisco do Sul, Santa Catarina, South Region, Brazil [db_pics/mdpics/MD-23843a.jpg]](db_pics/mdpics/MD-23843a.jpg)
![Hydroxylherderite, Tourmaline (Var: Indicolite) from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-243401a.jpg]](db_pics/mdpics/MD-243401a.jpg)
![Hydroxylherderite, Tourmaline (Var: Indicolite) from Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-243401b.jpg]](db_pics/mdpics/MD-243401b.jpg)