A-Dr. W S Logan Rhodochrosite Collection 4/4/18

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A-Dr. W S Logan Rhodochrosite Collection 4/4/18
A once in a lifetime opportunity to purchase specimens from the author of "Rhodochrosite, Crystals of Drama and Nuance". Localities in this collection range from Germany, England, Peru, Gabon, USA, China, Romania, Bulgaria, Russia, Canada, Greece, South Africa and more. The specimen descriptions are taken directly from Dr. Logans observational records.

A-Dr. W S Logan Rhodochrosite Collection 4/4/18

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Daniel Bonanza Mine, Ouray County Colorado, Quartz on Rhodochrosite
1 Quartz on Rhodochrosite Daniel Bonanza Mine, Ouray County Colorado
3.8 X 3.6 X 2.5cm 
Sharp rhombs to 8mm with dull pink color partially coated with modest iron staining at margins. Sulfide matrix. 
Price: 150.00 USD
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American Tunnel, Silverton, San Juan County Colorado, Rhodochrosite
2 Rhodochrosite American Tunnel, Silverton, San Juan County Colorado
6.6 X 4.1 X 3.4cm 
Beautiful pink rhombs to 1.6cm on drusy Quartz Nearly complete floater with only a small 3cm contact on left. Two overgrown and eroded xls. on back. 
Price: 600.00 USD
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Champion Mine, Cinnamon Pass, Lake City Colorado, Rhodochrosite
3 Rhodochrosite Champion Mine, Cinnamon Pass, Lake City Colorado
3.8 X 3.5 X 1.2cm 
Bright pink lenticular xls on white Quartz, golden Pyrite and blue Bornite 
Price: 110.00 USD
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Deveti Septemvri Mine, Rhodope Mountains Bulgaria, Rhodochrosite
4 Rhodochrosite Deveti Septemvri Mine, Rhodope Mountains Bulgaria
7.1 X 6.2 X 5.2cm 
"Rose" habit without matrix presenting as a floater with tiny crystals assuming a curved, feathery shape. Perhaps an odd pseudomorph after ? calcite. Labeled as Manganoclacite but is completely negative with HCl. Ex Jim Robison collection 
Price: 300.00 USD
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East Calusa Mine, Butte, Silver Bow Montana, Rhodochrosite
5 Rhodochrosite East Calusa Mine, Butte, Silver Bow Montana
4.1 X 3.2 X 1.9cm 
Aesthetic dull orange rhombs with some stepped edges with no matrix. No sulfides but two decorative rosettes of white Quartz enhance. Crystals to 1.5 cm are undamaged except for trivial contact features and one cleaved xl at margin. Rare locality. 
Price: 350.00 USD
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Emma MIne, Butte, Silver Bow County Montana, Rhodochrosite
6 Rhodochrosite Emma MIne, Butte, Silver Bow County Montana
4.5 X 2.6 X 2.1 
Rich pink color, excellent for the locaity. Sharp rhombs to 7mm accented by numerous white Quartz points, two 1cm xls being central surrounded by glistening drusy on rhodo xls. Minor dots of Chalcopyrite Ex Jerry Fenwick collection. 
Price: 250.00 USD
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Huacocholpa, Havecavelica Province Peru, Rhodochrosite
7 Rhodochrosite Huacocholpa, Havecavelica Province Peru
7.5x 4 X 1.3cm 
Exceptional for the locality with a rich plate of bright pink Saddle-shaped crystals of wafer thickness intersecting. This more or less confirms the locality-specific swirl pattern as an exaggerated saddle-shaped morphology. Small xls of Pyrite and (rare) tetrahedrite decorate throughout and there is one eccentric white cleaved baryte xl which adds little. reverse shows smaller crystals of the same morphology merging pink with white color. 
Price: 300.00 USD
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Kutna Hora Policany, Bohemia Czech Republic, Rhodochrosite
8 Rhodochrosite Kutna Hora Policany, Bohemia Czech Republic
5.9 X 4.8 X 4.4cm 
A small cavitation is filled with spherules of pale pink to pinkish-white rhodochrosite on a field of white likely also Rhodochrosite within a casement of heavy iron-rich matrix. Even at 30X the surface of the spherules fails to disclose any crystalline element. One fractured spherule reveals conectric layers of progressively whiter mineralization. From the Stoppani Collection. 
Price: 800.00 USD
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Madem Lakos, Chalkediki Prefecture, Macedonia Greece, Rhodochrosite
9 Rhodochrosite Madem Lakos, Chalkediki Prefecture, Macedonia Greece
3.7 X 3.3 X 1.8 
Cluster of fairly sharp rhombs several of which are unusually elongated to 8x3mm. The color is a very pale pink with some modest secondary granular white deposit on occsional xls. Matrix is quartz sphalerite and pyrite with a shard of clear Calcite. The pinkish rhombs test positive with cold dilute HCl. 
Price: 120.00 USD
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Manuelita Mine, Yuali Province, Junin Department Peru, Rhodochrosite
10 Rhodochrosite Manuelita Mine, Yuali Province, Junin Department Peru
6.3 X 3.6 X 2.7cm 
Deep pink rhombs to 7mm on Pyrite matrix. There is unusual color zoning in all xls with one showing a classic trigonal pattern ("Mercedes") that seems to follow the lines of symmetry within the crystal. Very unusual. 
Price: 400.00 USD
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Moanda Mine, Haut Ogooue Gabon, Rhodochrosite
11 Rhodochrosite Moanda Mine, Haut Ogooue Gabon
7 X 4.8 X 3.6cm 
One large and 3 smaller interconnected pockets lined with classic tiny, highly lustrous, scalene Rhodochrosite crystals with the characteristic dark orange color, The smaller pockets show moderate peripheral extraction damage. The large pocket is relatively free except for two eye-visible areas of damage. 
Price: 300.00 USD
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Moanda Mine, Haut-Ogooue Gabon, Rhodochrosite
12 Rhodochrosite Moanda Mine, Haut-Ogooue Gabon
3.7 X 3.2 X 1.4cm 
A beautiful and wildly aberrant specimen from this well-known locality. Small veins of typical small scalenohedral crystals traverse a coal-black matrix displaying a vivid hot pink gemminess. This is most unlike nearly all other specimens from the area which dependably exhibit a dark red-brown color. In addition the upper margin shows a narrow row of nearly maroon crystals. There is some damage to the crystals in a belt across the middle of the piece which is likely extraction injury. 
Price: 250.00 USD
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N'chwaning Mine, Kalahari Manganese Fields South Africa- ON APPROVAL, Rhodochrosite
13 Rhodochrosite N'chwaning Mine, Kalahari Manganese Fields South Africa- ON APPROVAL
4 X 2.7 X 1.4cm 
Multiple highly lustrous crystals grouped in columnar fashion. Rich pink color. No damage. 
Price: 200.00 USD
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Nagyag, Transylvania Romania, Rhodochrosite
14 Rhodochrosite Nagyag, Transylvania Romania
8.2 X 7.7 X 2.6cm 
Creamy tan (almost white) to very faintly rose-colored lenticular xls covering a dark matrix of Alabandite. Immediately beneath the crystals is a thin layer of similarly colored Calcite (Pos. HCl). The Rhodo crystals themselves are completely and reproducibly HCl negative. XRD shows Ca at 21.68 wt.%. Islands of orthorhombic appearing metallic xls of an unknown sulfide are present as an attractive contrasting accent. Very rare color and locality From Roger Lang.. Ex. Dr. F Kranz stock and with an old English label. 
Price: 400.00 USD
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Pasto Bueno Peru, Rhodochrosite
15 Rhodochrosite Pasto Bueno Peru

Highly three-dimensional polymetallic matrix (including Galena, Sphalerite Chalcopyrite and possibly tetrahedrite ) nearly covered with hillocks of Rhodochrosite microcrystalls of a very pale pink color and a saddle-shaped habit. Most of the Rhodochrosite is in turn covered with drusy clear Quartz providing sparkle and an aesthetic specimen. 
Price: 300.00 USD
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Pasto Bueno Peru, Rhodochrosite
16 Rhodochrosite Pasto Bueno Peru
4.2 X 4 X 1.7cm 
Aesthetic cluster of stepped rhombohedral crystals in the manner typical of Pasto Bueno are stacked atop each other in a jumble. The central portion of each rhomb has a pale flesh color surrounded by a typical hot pink outer layer. The whole rests on a base of white Quartz with the classic colorless needles piercing near the top. A single crystal of Hübnerite is associated. 
Price: 350.00 USD
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Remedios Mine, Taxco, Guerrero Mexico, Rhodochrosite
17 Rhodochrosite Remedios Mine, Taxco, Guerrero Mexico
10 X 8 X 3.6cm 
Pale pink micro xls of Rhodochrosite covered completely with sparkling drusy Quartz on weathered Geothite matrix.Back shows broken spherical casts of Quartz over ? Filled with a vein of iron-stained terminated Quartz xls. Unusual for the locality. 
Price: 200.00 USD
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San Genaro Mine, Huancavelica Department Peru, Rhodochrosite
18 Rhodochrosite San Genaro Mine, Huancavelica Department Peru
7.7 X 4.4 X 3.7cm 
Matrix of Quartz over black mixed sulfides host abundant Rhodochrosite nearly totally covered with a later of tiny quartz needles. The Rhodochroste crystals are mostly formless but some suggest lamellar compressed Rhombs and one side sports some iron discoloration. Two conspicuous soaring hollows have been interpreted as Rhocohrosite epimorph after Quartz.. Some of the matrix Quartz is amethestine. 
Price: 200.00 USD
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Santa Rita Mine, Casapalca Peru, Rhodochrosite
19 Rhodochrosite Santa Rita Mine, Casapalca Peru
6 X 4.4 X 2.8cm 
Multiple opaque dusty pink rhombs to 1.7cm on edge atop a quartz matrix. The xls show exaggerated curvature typical for the locality. No damage. 
Price: 275.00 USD
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Silverton, San Juan County Colorado, Rhodochrosite
20 Rhodochrosite Silverton, San Juan County Colorado
3.5 X 2.5 X 1.8cm 
Hot pink xls in rosette on matrix. Very good color. 
Price: 250.00 USD
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