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Gregory Crenko  Collection
Edward David
#TUC 586
Barite Crystals on Fluorite
Sub-Rosiclare Level, Annabel Lee Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, USA
17 x 13 x 6.5 cm
Ex-Les and June Tolonen Collection
Beautiful rich coverage of fine white Barite crystals on purple Fluorite. In excellent condition.
#TUC 587
Alligator Smoky Quartz
Minas Gerais, Brazil
16 x 11 x 3.5 cm
Nice specimen of Alligator style Smoky Quartz from Brazil.
#TUC 588
Rhodocrosite & Calcite on Sphalerite
Trepča Stan Terg Mine (Stari Trg Mine),Trepča Complex,Trepča Valley, 
Kosovska Mitrovica, District of Kosovska Mitrovica, Kosovo
7.5 x 7.5 x 4 cm
Jet black, striated crystals of Sphalerite crowned with pink Rhodocrosite and with minor Calcite.
#TUC 589
Stilbite Crystal Cluster with Chalcedony on Matrix
Nashik, Maharashtra, India
13 x 9.5 x 4.5 cm
Very aesthetic cluster of light salmon colored, lustrous Stilbite crystals on Chalcedony.
#TUC 590
#TUC 591
Siderite Crystal Cluster with Calcite
Prinzipal MIne, Herja Complex, Baia Mare, Maramures, Romania
9 x 8 x 4 cm
Chrysocolla on Malachite
Lubumbashi, Katanga (Shaba) Province, Democratic Republic of the Congo (Zaire)
6.5 x 6 x 1 cm
Super specimen of mustard colored, curved rhombohedrons of Siderite that are flattened to appear bladed, with partial coating of white Calcite.
Velvety light blue Chrysocolla over botryoidal Malachite.
#TUC 592
Hematinic Calcite Crystal on Calcite
Daye County, Huangshi Prefecture, Hubei Province, China
13.5 x 7 x 4 cm
Superb, essentially pristine, double terminated hematinic twin crystal of Calcite (11x5.5x5 cm) perched on a mass of smaller Calcite crystals.
#TUC 593
Fluorite Crystals on Calcite
Erongo Mountains, Usakos & Omaruru Districts, Namibia
7 x 5 x 3 cm
Pretty, gemmy green Fluorite crystals on Calcite matrix.
#TUC 594
Epidote Crystals on Andradite
Canta, Canta Province, Lima, Peru
6.5 x 4.5 x 3 cm
Fine specimen of dark pistachio green, lustrous, prismatic Epidote crystals (to 3x0.5 cm) on Andradite.
#TUC 595
Pink Calcite Crystal Cluster
Huanggang Mine, Hexigten Banner, Ulanhad Leasgue, Inner Mongolia, China
17 x 11 x 6 cm
Aesthetic cluster of lustrous, pink Calcite crystals.
#TUC 596
Fluorite Crystals on Sphalerite
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District,  Smith County, Tennessee,  USA
16 x 10 x 5 cm
Excellent specimen of modified cubic purple Fluorite crystals on Sphalerite from the famous Elmwood Mine. In excellent condition.
#TUC 597
Hematinic Quartz with Calcite
Jiangxi Province, China
14.5 x 12 x 5.5 cm
Beautiful white Calcite crystals, with secondary growth of small Calcite crystals, on a base of Hematinic Quartz.
#TUC 598
Azurite & Malachite
M'Cissi, Er Rachidia, Morocco
9.5 x 9 x 5.5 cm

Very colorful specimen of Azurite and Malachite from recent find in Morocco.
#TUC 575
Fluorite Crystal Cluster
Rosiclare Level Main Orebody, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, USA
18 x 13.5 x 7 cm
Ex-Betty Kalaskie Collection
#TUC 576
Cave Calcite Crystal Cluster
Yangshuo County, Guilin City, Guangxi Province, China
11.5 x 8 x 5 cm
#TUC 577
Cuprian Adamite on Limonite
Ojuela Mine, Mapimi, Durango, Mexico
11 x 9 x 4 cm
Ex-Betty Kalaskie Collection
#TUC 578
Fluorite Crystals on Calcite
Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China
12 x 10 x 6 cm
#TUC 579
Calcite Crystal on Dolomite
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee, USA
13 x 10.5 x 5 cm
#TUC 580
Schorl Crystal Cluster
Erongo Mountain, Usakos & Omaruru District, Namibia, Africa
8.5 x 5.5 x 3.5 cm
#TUC 581
Calcite Crystal on Matrix
Daye County, Huangshi Prefecture, Hubei Province, China
8 x 6.5 x 5.5 cm
#TUC 582
Wulfenite Crystals on Matrix
Red Cloud Mine, Silver district, Trigo Mouintains, La Paz County, Arizona, USA
3.5 x 2 x 1 cm
#TUC 583
Purplish Quartz var. Chalcedony (Grape Agate) 
Manakkara  Beach, Mamaju  Area, Sulawesi  Barat  Province, Sulawesi, Indonesia
6 x 5 x 2.5 cm
#TUC 584
Hematinic Quartz Crystal Cluster
Orange River, Northern Cape Province, South Africa
9 x 8 x 3 cm
#TUC 585
Descloizite Crystal Cluster
Berg Aukas Mine, Grootfontein District, Otjozondjupa Region, Namibia, Africa
6.5 x 5 x 3.5 cm
Gorgeous dark blue Fluorite crystal cluster in fine condition.
Aesthetic stalactitic cave Calcite with nice luster and some brownish tinting, probably from Iron.
Rich coverage of Cuprian Adamite crystals on Limonite.
Grayish blue cubes of Fluorite with dark blue center zones on Calcite from a new find in China.
Double terminated, golden, gemmy Calcite crystal measuring 6x 4 cm nicely perched on Dolomite matrix.
Jet black Schorl crystals with good luster and in very good condition.
Well formed, faceted, translucent  Calcite crystal with some reddish to golden tinting on matrix.
Super minature specimen of very gemmy, sharp,
reddish orange crystals of Wulfenite (to 0.7 cm)
from the famous Red Cloud Mine.
Nice cluster of Quartz crystals with red hematinic phantoms.
Descloizite is an end member of a series composed of the mineral Mottramite. Mottramite is the copper rich end member, while descloizite is the zinc rich member. Both minerals usually contain significant percentages of both elements and are rarely pure. Descloizite can form nice well shaped crystals that have a nice luster and striking color. Its rarity and attractiveness are the reason for the typically high prices  for a fine specimen.
These new Chalcedonies or Grape Agates are from a new find in Indonesa and were a hot item at the recent Tuscon Mineral Show. Very attractive.
Sale - 25 % Off List Price for the Following Specimens: