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SV2160CMP: Jarosite
Jarosite crystals with very well defined faces and edges, transparent, very lustrous and on matrix. These Spanish Jarosite specimens are among the best in the world, not because of the size, but because of the transparency and sharpness of the crystals. This specimen comes from the collection of duplicates of Carles Curto, nº 2014.27, whose handwritten label we will send to the buyer.
Socavón Las Palomas (El Arteal Tunnel), Almagrera Range, Cuevas del Almanzora, Comarca Levante Almeriense, Almería, Andalusia  Spain (08/1997)
Specimen size: 6.5 × 3.6 × 2.1 cm = 2.56” × 1.42” × 0.83”
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N58VL2: Jarosite
A representative specimen from the type locality. On a Limonite matrix, very bright Jarosite crystals showing a tabular habit, some in groups of rosettes and other isolated crystals with developed prism faces. Brown color is very intense and excellent transparency. NASA Opportunity Rover prospecting on planet Mars found Jarosite that may point to the rock's wet history having been in an acidic lake or an acidic hot springs environment, like in Barranco Jaroso deposit.
Jaroso ravine, Almagrera Range, Cuevas del Almanzora, Comarca Levante Almeriense, Almería, Andalusia  Spain (1997)
Specimen size: 5.8 × 3.1 × 2.8 cm = 2.28” × 1.22” × 1.10”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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JFD172AP0: Jarosite on Siderite
It may seem silly, but jarosites from Spain are among the best in the world not because of the size of the crystals but because of their quality and transparency. Also, even though the ones from Arteal are not from the type locality, which is Barranco Jaroso, both localities are in the Sierra Almagrera and not far from each other.
Socavón Santa Bárbara (El Arteal Tunnel), Almagrera Range, Cuevas del Almanzora, Comarca Levante Almeriense, Almería, Andalusia  Spain (2006)
Specimen size: 7.2 × 6 × 3.5 cm = 2.83” × 2.36” × 1.38”
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MA10Z4: Jarosite with Natrojarosite
Druse of dark brown Jarosite crystals on matrix. They are translucent, very bright, have very well defined faces and edges and are with yellow very well delineated Natrojarosite crusts.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)
Specimen size: 3.9 × 3.9 × 1.6 cm = 1.54” × 1.54” × 0.63”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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MG10Z4: Jarosite with Natrojarosite
Druse of dark brown Jarosite crystals on matrix. They are translucent, very bright, have very well defined faces and edges and are partially coated by yellow small Natrojarosite crystals and crusts.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)
Specimen size: 6.7 × 4.4 × 3.8 cm = 2.64” × 1.73” × 1.50”
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MC11Z4: Jarosite with Natrojarosite
Druse of translucent, very bright, dark brown Jarosite crystals on matrix. They have very well defined faces and edges and are on a matrix with vivid yellow Natrojarosite crusts also partially coating the Jarosite crystals.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)
Specimen size: 3.8 × 2.7 × 2.2 cm = 1.50” × 1.06” × 0.87”

Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”
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MJ11Z4: Jarosite with Natrojarosite
Druse of dark brown Jarosite crystals on matrix. They are translucent, very bright, have very well defined faces and edges and are partially coated by vivid yellow and white small Natrojarosite crystals and crusts.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)
Specimen size: 7.5 × 4.7 × 4.6 cm = 2.95” × 1.85” × 1.81”
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TH12V2: Jarosite with Natrojarosite
From a recent find in Lavrion (Laurium). Aggregates on matrix of dark brown Jarosite crystals, very bright and partially covered by yellowish concretions of Natrojarosite.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (01/2012)
Specimen size: 5.9 × 4.2 × 2.7 cm = 2.32” × 1.65” × 1.06”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”
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ME14Z4: Jarosite with Natrojarosite
Druse of dark brown Jarosite crystals on matrix with reddish shades. They are translucent, very bright, have very well defined faces and edges and are partially coated by vivid yellow small Natrojarosite crystals and crusts.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (12/2013)
Specimen size: 5.5 × 4.2 × 2.6 cm = 2.17” × 1.65” × 1.02”
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TK13V2: Jarosite with Natrojarosite and Romanechite
From a recent find at Lavrion. Aggregates on matrix of dark brown Jarosite crystals, very bright and partially covered by yellowish concretions of Natrojarosite and globular and concretionary growths of black Romanéchite.
Kamariza Mines, Agios Konstantinos, Lavrion Mining District, Attikí (Attica) Prefecture  Greece (01/2012)
Specimen size: 7.1 × 5.4 × 4.1 cm = 2.80” × 2.13” × 1.61”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”
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TX69S0: Jeremejevite
A novelty at Tucson 2011. Crystal with a very acute pyramidal polycrystalline termination. The crystal is transparent, bright and a deep sky blue color with slight violet shades. They are floaters with irregular surfaces, having had been formed in channels of dissolution in bigger crystals, now missing.
Ameib Farm 60 (Ameib Farm), Usakos, Karibib District, Erongo Region  Namibia (02-03/2010)
Specimen size: 3.7 × 0.8 × 0.7 cm = 1.46” × 0.31” × 0.28”
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TB69S0: Jeremejevite
A novelty at Tucson 2011. Crystal with a very acute pyramidal polycrystalline termination. The crystal is transparent, bright and a deep sky blue color with slight violet shades. They are floaters with irregular surfaces, having had been formed in channels of dissolution in bigger crystals, now missing.
Ameib Farm 60 (Ameib Farm), Usakos, Karibib District, Erongo Region  Namibia (02-03/2010)
Specimen size: 3.2 × 0.7 × 0.6 cm = 1.26” × 0.28” × 0.24”
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TK69S0: Jeremejevite
A novelty at Tucson 2011. Crystal with a very acute pyramidal polycrystalline termination. The crystal is transparent, bright and a deep sky blue color with slight violet shades. They are floaters with irregular surfaces, having had been formed in channels of dissolution in bigger crystals, now missing.
The specimen has been reviewed, photographed and published as a novelty from Tucson 2011 in the Russian magazine ‘Mineral Observer’ on page 70 in the volume 16, number 2
Ameib Farm 60 (Ameib Farm), Usakos, Karibib District, Erongo Region  Namibia (02-03/2010)
Specimen size: 2.7 × 0.9 × 0.8 cm = 1.06” × 0.35” × 0.31”
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ME37AJ4: Joaquinite-(Ce) with Neptunite and Benitoite
Neptunite crystals on matrix with very well defined faces and edges and very bright. They are with a Benitoite single crystal and Joaquinite-(Ce) crystals of a good size for the species, with a dipyramidal shape, very well defined faces and edges, translucent and with an intense orange color.
California State Gem Mine (Benitoite Gem Mine), San Benito River headwaters area, Santa Rita Peak, New Idria District, San Benito County, California  USA
Specimen size: 5.5 × 5.2 × 4.4 cm = 2.17” × 2.05” × 1.73”

Main crystal size: 2 × 0.6 cm = 0.79” × 0.24”
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EC47N9: Johachidolite with Quartz
A novelty at Ste. Marie 2009. Excellent sample of Johachidolite, among the best for this very rare borate. The crystals, with well defined faces and edges and orange color, are on a matrix of Quartz.
Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region (Mandalay Division)  Myanmar (Burma) (2008)
Specimen size: 3.4 × 2.5 × 4.1 cm = 1.34” × 0.98” × 1.61”
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ER7N9: Johachidolite with Quartz, Sodalite (Hackmanite) and Muscovite
A novelty at Ste. Marie 2009. Excellent sample of Johachidolite, among the best for this very rare borate. The crystals, with well defined faces and edges and orange color, are on a matrix rich in Sodalite (Hackmanite) and Muscovite.
Pein-Pyit, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region (Mandalay Division)  Myanmar (Burma) (2008)
Specimen size: 4.4 × 3.2 × 4.2 cm = 1.73” × 1.26” × 1.65”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”
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TK16AH1: Jouravskite
A novelty at Denver 2017. Aggregate of very sharp Jouravskite crystals, a very rare calcium and manganese sulfate-carbonate. The crystals, on a rocky matrix with Quartz, apart their excellent luster, have and an extraordinary lemon-yellow color.
N'Chwaning III Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)
Specimen size: 5.8 × 5.6 × 4 cm = 2.28” × 2.20” × 1.57”
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EX91AG3: Jouravskite with Xonotlite
A novelty at Denver 2017. Botryoidal aggregates of Jouravskite micro-crystals, a very rare calcium and manganese sulfate-carbonate. They are very sharp, very bright, have and an extraordinary lemon-yellow color and are on a Xonotlite matrix.
This specimen was photographed for the ‘Munich 2017’ section of the magazine ‘Mineralien Welt’ and appears on page 71 of number 1/2018 and the magazine ‘Paragénesis’, number 01/2018, page 103
N'Chwaning III Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)
Specimen size: 5.8 × 3.6 × 1.7 cm = 2.28” × 1.42” × 0.67”

Main crystal size: 0.7 × 0.3 cm = 0.28” × 0.12”
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EZ99AG4: Jouravskite with Xonotlite and Hydroxyapophyllite-(K)
A novelty at Denver 2017. Very well defined lenticular Jouravskite crystals, a very rare calcium and manganese sulfate-carbonate. They are translucent, very bright, with an extraordinary lemon-yellow color and on matrix, with white Xonotlite aggregates and translucent botryoidal Hydroxyapophyllite-(K) aggregates with a lavender color.
The specimen has been reviewed, photographed and published as a new discovery in the magazine ‘Mineral Up’ on page 64 in number 2017/2
N'Chwaning III Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province  South Africa (2017)
Specimen size: 8.8 × 4.4 × 1.2 cm = 3.46” × 1.73” × 0.47”
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JV58F2: Julgoldite-(Fe) with Fluorapophyllite-(K)
The rare mineral Julgodite-(Fe) covers the basalt matrix. The small crystals, which are quite dark, are noticeable as they contrast well with the crystals of Fluorapophyllite-(K), which are doubly-terminated, brilliant, water clear and with sharp pyramids.
Jalgaon District, Maharashtra  India (±2000)
Specimen size: 20 × 13 × 5 cm = 7.87” × 5.12” × 1.97”

Main crystal size: 1.4 × 0.5 cm = 0.55” × 0.20”
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TG86AL3: Kaolinite after Orthoclase
Kaolinite pseudomorph after a floater Karlsbad-law twinned Orthoclase crystal. This classic English specimen will be sent in its original Perky box from the Robert J. Noble collection, which also contains the label.
St Dennis, St Austell District, Cornwall  England / United Kingdom
Specimen size: 2.7 × 1.3 × 0.6 cm = 1.06” × 0.51” × 0.24”
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23TLX96: Kapundaite
Fine aggregates of orange-brown Kapundaite crystals, completely filling vugs in a matrix formed by a mixture of phosphates. Kapundaite is a rare phosphate of sodium, calcium, and iron and comes from the type locality (TL) for the species, the Tom's quarry in Kapunda, Australia, which is active and is also the type locality for another 4 mineral species, in addition to Kapundaite.
Tom's Quarry, Kapunda, North Mount Lofty Ranges, South Australia  Australia
Specimen size: 5.1 × 4.3 × 3.1 cm = 2.01” × 1.69” × 1.22”
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SV290TGR: Karibibite
Botryoidal growths of small Karibibite crystals, very intensely colored between orange and yellow. A rare iron arsenate, not easy to obtain. This piece belonged to Carles Manresa.
Oumlil Mine, Oumlil, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco
Specimen size: 5.2 × 2.9 × 3.4 cm = 2.05” × 1.14” × 1.34”
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EL14T4: Karibibite
Botryoidal growths on matrix of small crystals. They have a very intense color, between orange and yellow.
Oumlil Mine, Oumlil, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco
Specimen size: 4.3 × 3.9 × 3 cm = 1.69” × 1.54” × 1.18”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”
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SV2110TFF: Karibibite with Schneiderhöhnite
Botryoidal growths of small Karibibite crystals with an intense color between orange and yellow, on matrix, with small dark Schneiderhöhnite crystals. An interesting combination of these two species, two rare iron arsenates, not easy to obtain. This specimen belonged to Carles Manresa.
Oumlil Mine, Oumlil, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region  Morocco
Specimen size: 3.7 × 3 × 2.5 cm = 1.46” × 1.18” × 0.98”

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The Pedro Goy
Collection		 The Desmond Sacco Collection
The Desmond Sacco
Collection		 Best Specimens
Best Specimens		 The Folch Collection
The Folch
Collection		 Home Page Minerals
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Minerals