For the Love of Dendrites

Hi,
here are some of calcites with probably manganeze dendrites on crystal faces.
Mežica Mine,Slovenia:


Back side, same specimen:


Jasovnik tunnel, Slovenia. 3 × 3.5 × 3 cm

Specimen was all embeded in clay.

Good luck

Boris

Dendrites loved and lost.

Santa Rita Copper	© RWMW

The Mineral Digest was created by Julio Tangelof sp? who ran a company called Astros back in the 70s in New York City. He was notorious for never paying his bills and selling Mexican coconut geodes that cost $5 anywhere else but he was selling them for $60. His sales people often didn't know what they were selling and I doubt that he could identify more than 20 common minerals by sight.. The people he hired to run his organization knew even less. He was an egomaniac of the first order. The magazine was designed as an advertising vehicle and for his personal aggrandizement which shines through loud and clear if you read some of the articles that he paid a captive editor to have written about him and his wife by hacks. I should add that this is my personal point of view and that his descendants still run the business out of NY City today and might have an entirely different point of view.

Rock Currier
Crystals not pistols.

Thanks for the info Rock. Given that information we could discern that there is likely not much credibility/validity behind the publication regarding the piece that Kelly posted. I agree with Rui, it has too many things in the correct order.

Rob, you say you "lost" those, I hope they went to good homes. Thanks for sharing your mementos.

The Copper is on display at the Royal Ontario Museum and maybe the Gold is too. The Silver is in the dungeon there.

Microphoto of Manganese Dendrites on Aragonite.
FOV: 4 x 4 mm.
From "Puesto Viejo" Quarry, Sierra de Puesto Viejo, Santa Bárbara Department, Province of Jujuy, Argentina.
Collected in 2004.

Manganes dendrites on mud-clay.
Specimen size: 12,7 x 9 x 1.8 cm.
From Raco River, Trancas Department, Province of Tucumán, Argentina.
Collected in 2010.

Manganese Dendrites on Clay-Shale.
Specimen size: 6.7 x 4 x 2.1 cm.
From Salar del Hombre Muerto, Antofagasta de la Sierra Department, Province of Catamarca, Argentina.
Collected in 2002.

Manganese Dendrites on mud-clay.
Specimen size: 7 x 4 x 2,3 cm.
From "Loro" River, Burruyacú Department, Province of Tucumán, Argentina.
Collected in 80´s.

Dendritic manganese oxides on schist.
Specimen size: 19.5 x 11 x 0.5 cm.
From Salar del Hombre Muerto, Antofagasta de la Sierra Department, Province of Catamarca, Argentina.
Collected in 2004.

Raul ~ Wonderful pieces. Nice to see from Argentina!

Tom - regarding growth on crystals, I think it depends on the type of crystal and the environment in which the dendrites form. Dendrites are seen frequently on feldspars and I think it might have to do with the actual surface of the crystal. Certainly they seem to like more porous surfaces, perhaps that is a coincidence based on the nature of the deposits where they are more typically found. But you are are right, you don't see them much on gem type crystals, more in them than on them, especially quartz. I suspect this might have to do with secondary deposition conditions and these don't seem to favour them forming and adhering to gem crystals in their environs.

Here is a feldspar with some incipient dendrites in what I call the blotchy stage.

Orthoclase twin
Cinco, Kern Co, California USA
4 x 2.5cm ex Fred Devito

Dan, yes agates, jaspers, opals et all are definitely welcome. I really don't know where to start! I am hoping that others will share such natural art.

There has been a lot of this Chinese jasper out there, they look so much like paintings, so I had to get one of course. 10 x 4cm.



And the great thing is that it has two sides that can both be displayed, which side to choose? Or should I get one of those spinning frames? LOL.



cheers,
stephanie :))

Sorry I don't have many details on this one such as age and species (I suppose I could look it up but nah, too lazy), I bought it for the dendrites. Imagine that. Oh, I should have warned you... I love dendrites.

Fossil Clam
Indonesia
4.3 x 2.8cm

All these specimens are fantastic, I really find myself liking the white with black dendrites from Portugal, very striking!

Here is a lemon opal dendrite from the Knoxville Recreation Area north of Napa California.

Dendritic Copper
Colonial Mine
Cape D'Or, Cumberland Co, Nova Scotia, Canada
~3cm



Aborescent Silver coated with Safflorite
Millerette Mine, Haultain Township, Gowganda area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
~2cm

Dendrites of Mossy Agate
FOV: 10 x 5 mm.
From Madagascar.

Beautiful dendritic massive specimen of Native Copper with Quartz Cystals included.
Specimen size: 9.5 x 9 x 4.6 cm.
From Copiapó, Copiapó Province, Atacama Region, Chile.
Collected in 1996.

Beautiful dendritic massive specimen of Native Copper with Quartz Cystals included.
Specimen size: 10.5 x 6.5 x 6 cm.
From Copiapó, Copiapó Province, Atacama Region, Chile.
Collected in 1996.

Very nice sample of Dendritic Native Copper with flattened crystals and Malachite covered.
Specimen size: 5.6 x 2 x 1.1 cm.
From Osceola Shaft # 10, Calumet, Houghton County, Michigan, U.S.A.




Edited 1 time(s). Last edit at 08/26/2012 02:03AM by Raúl Jorge Tauber Larry.

Beatiful Dendritic Psilomelane. It looks as branches of tree.
Specimen size: 7.5 x 6 x 4.5 cm.
From La Providencia Mine, Susques Department, Province of Jujuy, Argentina.
Collected in 60´s.