Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Long fibrous Crocidolite asbestos from the Northern Cape Province, South Africa. This specimen is kept in an enclosed case, as Asbestos has been proven to cause problems due to inhalation. Specimen is roughly 80 x 70 x 50 mm.

Riebeckite Root Name Group (Var: Crocidolite)

Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Crocidolite collected from roadside in Dale's Gorge in Nov 1970. FOV is 5cm. Fibres separating from massive crocidolite.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Bluish fibres of crocidolite in veins and lenses of varying length.

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

"Cone" structures formed in crocidolite asbestos from the Pomfret mine. These structures are fairly common and form due to pressure, the same process that produces stylolites. Johannesburg Geological Museum specimen.

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Fibres length: 5 cm. Currently in J. Parafiniuk collection.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

7.6 x 3.9 x 2.8 cm. Crocidolite is a form of riebeckite [Na2][Fe2+3Fe3+][(OH)2|Si8O22], which is easily apparent when you see the specimens densely-packed hair-like fibers. This variety is often called "blue asbestos" due to its deep blue-black color. This is an old-time piece from mining in South Africa. Fortunately, it was not used much ...

Riebeckite Root Name Group (Var: Crocidolite)

Redekammen, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Matted blue crocidolite on granite. Specimen size: 2.5 cm x 3 cm. P. Cristofono specimen and photo. Field collected 1988.

Riebeckite Root Name Group (Var: Crocidolite), Hematite

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

This example of the cone-shaped stromatolite Conophyton has a basal layer of crocidolite fibers discolored by hematite. I bought it for the Conophyton, and the unique crocidolite habit that might be called "tiger's eye" by many rock collectors, was a bonus. Specimen 7.9 cm left to right. Collection and photograph Norman King.

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

A curious example of Crocidolite (also known as "Blue Asbestos") from South Africa, this specimen consists of a sharp, blocky group of Crocidolite crystals in minor association with Pyrite. The crystal is dark blue and exhibits a sharp "cat's eye" effect. Specimen size is 5.2cm x 3.2cm x 2.9cm.

Riebeckite Root Name Group (Var: Crocidolite)

Transvaal, South Africa

Overall size 9 x 4,5 x 2,5 cm - Field of view 4 cm - Photo by Stefanie Menig

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Crocidolite. Photo and Collection; Jorge M. Alves.

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite), Hematite, Quartz, Tiger's Eye

Brockman Tiger eye mine, Mount Brockman, Ashburton Shire, Western Australia, Australia

Fibre veins containing fibrous quartz and crocidolite (riebeckite) - generally called tigers eye. Specimen 185mm long. Ex K. Lancaster collection. Specimen and photograph A. Tuma

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Fibrous riebeckite. View is about 3 mm across. P. Cristofono specimen and photo.

Riebeckite Root Name Group (Var: Crocidolite)

Blue Hole Mine, Robertstown, Goyder Regional Council, South Australia, Australia

Untidy bundles of very thin bluish fibres which readily break off. Field of view: 4.5mm.

Riebeckite Root Name Group (Var: Crocidolite)

Tenke Mine, Tenke-Fungurume area, Lualaba, DR Congo

Rare locality piece from Tenke collected probably in the late 50's. Not really eshetic because they dont get any better than this. Ex R. Van Dooren collection. Collection and photo, Paul De Bondt.

Riebeckite Root Name Group (Var: Crocidolite)

Unspecified Asbestos occurrence [1], Pine Flat, Jimtown, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA

dimension areamm. 2 x 2 photo and collection Luigi Chiappino

Riebeckite Root Name Group (Var: Crocidolite)

Blackburn Circle locality, Gloucester, Essex County, Massachusetts, USA

Blue fibrous riebeckite variety crocidolite. View is about 2 mm across. P. Cristofono specimen and photo, field collected 2009.

Riebeckite Root Name Group (Var: Crocidolite)

Gypsum-anhydrite mine, Wienern, Grundlsee, Liezen District, Styria, Austria

FOV 7,5 mm; Chris Auer photo and collection (ex J.Metzger coll., found 2004)

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

A rich mat of gray-blue Crocidolite fibers. FOV is 3 cm. Photo and collection of Lee Johnson.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Found in an abandoned asbestos mine near Prieska

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Masses of bluish fibres of Crocidolite emerging from between layers of the host rock matrix. From the Asbestos Mountains of Northern Cape, South Africa. The Asbestos Mountains is a range of hills in the Northern Cape province of South Africa, stretching south-southwest from Kuruman, where the range is known as the Kuruman Hills, to Prieska. It ...

Riebeckite Root Name Group (Var: Crocidolite)

Pfennigbach gypsum mine, Puchberg am Schneeberg, Neunkirchen District, Lower Austria, Austria

Small blue fibres in carbonate; Chris Auer photo and collection, self collected in 2013

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Asbestos

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Cone and ridge structures in crocidolite asbestos from Pomfret mine, 12.5 cm.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

This is a scanning electron microscope (SEM) photograph of "blue asbestos" from the Wittenoom Gorge Mine. Note the 10 micrometer scale on the bottom of the picture. Some of the finer fibers were measured at 0.1 micrometers across. The tiny size of these fibers helps to explain the toxic nature of this mineral.

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Blue, fibrous crocidolite, variety of riebeckite on feldspar and biotite, not visible in this photo. Rolf Luetcke specimen and photo.

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Crocidolite asbestos in a "cone" structure from the Pomfret mine.

Riebeckite Root Name Group (Var: Crocidolite)

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA

Blue crocidolite (fibrous riebeckite).

Riebeckite Root Name Group (Var: Crocidolite)

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA

Blue crocidolite (fibrous riebeckite). Former Harvard University specimen.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Bluish-black fibrous Crocidolite Ex Reinz Dichtung and Manfred Fabig collections (until 8 June 1969) Acquired from Rik Dillen at his garage sale on 2 June 2018

Riebeckite Root Name Group (Var: Crocidolite)

Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA

Crocidolite with magnetite

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssarssuk.

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Blue fibrous crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssassuk.

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Massive fibrous blue & white crocidolite surrounding orangish-tan carbonatite clasts. The specimen is from the fenitized wallrocks of the carbonatite-hosted REE deposit at the Mountain Pass Mine.

Riebeckite Root Name Group (Var: Crocidolite), Magnetite

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Bicolor, brick red to blue-gray, asbestiform, cross-fiber vein section of Riebeckite Var. Crocidolite 2.5 cm tall, 2.9 cm wide, and up to 0.6 cm thick, with a small amount of matrix on the top and base of the vein. Note the massive black Magnetite inclusion in the upper left corner of the specimen. Personal collection of Sharon Cisneros.

Riebeckite Root Name Group (Var: Crocidolite)

Las Monjas quarry, Cártama, Málaga, Andalusia, Spain

Ejemplar de riebeckita var. crocidolita.cantera las monjas, Cártama, málaga,Andalucía,españa.el ejemplar apareció junto a el crisotilo en una veta de serpentinitas

Riebeckite Root Name Group (Var: Crocidolite)

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

blue crocidolite on matrix. The field of view is 12 mm across. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite), Microcline

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

A large specimen of blue crocidolite with some light brown microcline. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite), Microcline

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

A mass of fibrous blue crocidolite with some microcline crystals. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Blue fibrous crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssassuk.

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Mineral specimens are rare from this historic old granite quarry opened in 1826. This was the USA's first large scale granite quarrying operation (Mindat). The last active quarry closed in 1963. This is a rare old large elongated specimen of blue-gray fibrous riebeckite variety crocidolite. This material is perhaps the worst perpetrator of ...

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

peter neschen collection (g-04892-05) Nikon D7000 + Sigma 150mm Apo Macro + Helicon Focus Methode B

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Fibrous, silky, blue crocidolite (an asbestiform variety of riebeckite). This sodium amphibole is known as "blue asbestos". Inhalation of fibers can cause serious and irreversible lung damage. Specimen is kept stored in a sealed clear plastic box to avoid dust and fibers.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

A rare old large solid contacted vein section of long fiber riebeckite (variety crocidolite) asbestos from the extinct asbestos mines of the Prieska area of Northern Cape, South Africa, near the Kalahari manganese fields. Only a few of the densely packed hair-like fibers project out from the piece. This material is perhaps the worst perpetrator of ...

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Canon 5D mk III, Canon macrolens 100 mm f =2.8, stacking with a Wemacro stackingrail and Helicon.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

A chatoyant dense band of blue-gray crocidolite asbestos fibers occurring as a fracture filling parallel to the sedimentary layers. The fibers grew perpendicular to the bedding planes, with a sharp contact. Crocidolite is fibrous riebeckite, an Amphibole Supergroup species and is recognized as the most harmful and carcinogenic of all asbestos ...

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

A striking, chatoyant dense band of blue-gray crocidolite asbestos fibers occurring as a fracture filling parallel to the sedimentary layers. The fibers grew perpendicular to the bedding planes, with a sharp contact. Crocidolite is fibrous riebeckite, an Amphibole Supergroup species and is recognized as the most harmful and carcinogenic of all ...

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite var. Crocidolite from Prieska, South Africa.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Blue asbestos. Possibly from the Pomfret area of the Northern Cape Province. South Africa.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

This blue-grey, long-fiber bundle of Riebeckite Var. Crocidolite is from the former Prieska Mine, a source of asbestiform minerals mined in the 20th Century for commercial purposes. Personal collection of Eugene & Sharon Cisneros.

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Crocidolite from the Mountain Pass mine. Full specimen view.

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Asbestiform Riebeckite with black and light blue parts. This locality has Magnesio-Fluoro-Riebeckite but it's not possible to tell visually if any is present in the sample.

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Dales Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Crocidolite collected from roadside in Dale's Gorge in Nov 1970. FOV is 5cm. Fibres separating from massive crocidolite.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Bluish fibres of crocidolite in veins and lenses of varying length.

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Fibres length: 5 cm. Currently in J. Parafiniuk collection.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Redekammen, Tunulliarfik Fjord, Ilímaussaq complex, Kujalleq, Greenland

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Matted blue crocidolite on granite. Specimen size: 2.5 cm x 3 cm. P. Cristofono specimen and photo. Field collected 1988.

Riebeckite Root Name Group (Var: Crocidolite), Hematite

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Crocidolite. Photo and Collection; Jorge M. Alves.

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Transvaal, South Africa

Overall size 9 x 4,5 x 2,5 cm - Field of view 4 cm - Photo by Stefanie Menig

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite), Hematite, Quartz, Tiger's Eye

Brockman Tiger eye mine, Mount Brockman, Ashburton Shire, Western Australia, Australia

Fibre veins containing fibrous quartz and crocidolite (riebeckite) - generally called tigers eye. Specimen 185mm long. Ex K. Lancaster collection. Specimen and photograph A. Tuma

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Fibrous riebeckite. View is about 3 mm across. P. Cristofono specimen and photo.

Riebeckite Root Name Group (Var: Crocidolite)

Tenke Mine, Tenke-Fungurume area, Lualaba, DR Congo

Rare locality piece from Tenke collected probably in the late 50's. Not really eshetic because they dont get any better than this. Ex R. Van Dooren collection. Collection and photo, Paul De Bondt.

Riebeckite Root Name Group (Var: Crocidolite)

Blue Hole Mine, Robertstown, Goyder Regional Council, South Australia, Australia

Untidy bundles of very thin bluish fibres which readily break off. Field of view: 4.5mm.

Riebeckite Root Name Group (Var: Crocidolite)

Unspecified Asbestos occurrence [1], Pine Flat, Jimtown, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA

dimension areamm. 2 x 2 photo and collection Luigi Chiappino

Riebeckite Root Name Group (Var: Crocidolite)

Blackburn Circle locality, Gloucester, Essex County, Massachusetts, USA

Blue fibrous riebeckite variety crocidolite. View is about 2 mm across. P. Cristofono specimen and photo, field collected 2009.

Riebeckite Root Name Group (Var: Crocidolite)

Gypsum-anhydrite mine, Wienern, Grundlsee, Liezen District, Styria, Austria

FOV 7,5 mm; Chris Auer photo and collection (ex J.Metzger coll., found 2004)

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

A rich mat of gray-blue Crocidolite fibers. FOV is 3 cm. Photo and collection of Lee Johnson.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Found in an abandoned asbestos mine near Prieska

Riebeckite Root Name Group (Var: Crocidolite), Pyrite

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Pfennigbach gypsum mine, Puchberg am Schneeberg, Neunkirchen District, Lower Austria, Austria

Small blue fibres in carbonate; Chris Auer photo and collection, self collected in 2013

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Asbestos

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Cone and ridge structures in crocidolite asbestos from Pomfret mine, 12.5 cm.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Blue, fibrous crocidolite, variety of riebeckite on feldspar and biotite, not visible in this photo. Rolf Luetcke specimen and photo.

Riebeckite Root Name Group (Var: Crocidolite)

Pomfret Mine, Pomfret, Kagisano-Molopo Local Municipality, Dr Ruth Segomotsi Mompati District Municipality, North West, South Africa

Crocidolite asbestos in a "cone" structure from the Pomfret mine.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Bluish-black fibrous Crocidolite Ex Reinz Dichtung and Manfred Fabig collections (until 8 June 1969) Acquired from Rik Dillen at his garage sale on 2 June 2018

Riebeckite Root Name Group (Var: Crocidolite)

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA

Blue crocidolite (fibrous riebeckite).

Riebeckite Root Name Group (Var: Crocidolite)

Fallon Brothers Quarry, Quincy, Norfolk County, Massachusetts, USA

Blue crocidolite (fibrous riebeckite). Former Harvard University specimen.

Riebeckite Root Name Group (Var: Crocidolite)

Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA

Crocidolite with magnetite

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssarssuk.

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Blue fibrous crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssassuk.

Riebeckite Root Name Group (Var: Crocidolite), Magnetite

Wittenoom Gorge Mine, Wittenoom Gorge, Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Massive fibrous blue & white crocidolite surrounding orangish-tan carbonatite clasts. The specimen is from the fenitized wallrocks of the carbonatite-hosted REE deposit at the Mountain Pass Mine.

Riebeckite Root Name Group (Var: Crocidolite)

Las Monjas quarry, Cártama, Málaga, Andalusia, Spain

Ejemplar de riebeckita var. crocidolita.cantera las monjas, Cártama, málaga,Andalucía,españa.el ejemplar apareció junto a el crisotilo en una veta de serpentinitas

Riebeckite Root Name Group (Var: Crocidolite), Microcline

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

A large specimen of blue crocidolite with some light brown microcline. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite)

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

blue crocidolite on matrix. The field of view is 12 mm across. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite), Microcline

Hurricane Mountain localities, North Conway, Conway, Carroll County, New Hampshire, USA

A mass of fibrous blue crocidolite with some microcline crystals. Henry Minot photo & collection.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland

Blue fibrous crocidolite with old Philadelphia Academy of Natural Sciences label giving locality as Narssassuk.

Riebeckite Root Name Group (Var: Crocidolite)

Granite Railway Quarry, Quincy, Norfolk County, Massachusetts, USA

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

peter neschen collection (g-04892-05) Nikon D7000 + Sigma 150mm Apo Macro + Helicon Focus Methode B

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Canon 5D mk III, Canon macrolens 100 mm f =2.8, stacking with a Wemacro stackingrail and Helicon.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite var. Crocidolite from Prieska, South Africa.

Riebeckite Root Name Group (Var: Crocidolite)

Wittenoom, Ashburton Shire, Western Australia, Australia

Riebeckite Root Name Group (Var: Crocidolite)

Northern Cape, South Africa

Blue asbestos. Possibly from the Pomfret area of the Northern Cape Province. South Africa.

Riebeckite Root Name Group (Var: Crocidolite)

Prieska, Siyathemba Local Municipality, Pixley ka Seme District Municipality, Northern Cape, South Africa

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Crocidolite from the Mountain Pass mine. Full specimen view.

Riebeckite Root Name Group (Var: Crocidolite)

Mountain Pass Mine, Mountain Pass, Mountain Pass District, Clark Mts, San Bernardino County, California, USA

Asbestiform Riebeckite with black and light blue parts. This locality has Magnesio-Fluoro-Riebeckite but it's not possible to tell visually if any is present in the sample.