Mineral Specimens with Quartz

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K-171 - Prehnite on Quartz with Amethyst phantoms - SOLD
Goboboseb, Namibia

small cabinet, 6.6 x 3.0 x 2.4 cm
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Prehnite on Quartz with Amethyst phantoms from Goboboseb, Namibia [db_pics/pics/k-171a.jpg]
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Prehnite on Quartz with Amethyst phantoms from Goboboseb, Namibia [db_pics/pics/k-171b.jpg]

This is one of the larger examples of prehnite associated with good amethyst, that we have. Most such crystals from these finds are from smaller pockets, and are smaller in size by quite a margin. Superb specimen with excellent deep color, and intense phantoms! Repaired once, cleanly, near the middle.


K-177 - Prehnite on Amethystine Quartz - SOLD
Goboboseb, Namibia

miniature, 4.5 x 1.8 x 1.4 cm
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Prehnite on Amethystine Quartz from Goboboseb, Namibia [db_pics/pics/k-177a.jpg]
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Prehnite on Amethystine Quartz from Goboboseb, Namibia [db_pics/pics/k-177b.jpg]
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Prehnite on Amethystine Quartz from Goboboseb, Namibia [db_pics/pics/k-177c.jpg]

A very elegant specimen with prehnite of apple-green color wrapped exquisitely around the tip of a GLASSY, GEMMY amethyst! lok at the tip poke through!


K-178 - Prehnite on Quartz - SOLD
Goboboseb, Namibia

miniature, 5.4 x 2.6 x 2.3 cm
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Prehnite on Quartz from Goboboseb, Namibia [db_pics/pics/k-178a.jpg]
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Prehnite on Quartz from Goboboseb, Namibia [db_pics/pics/k-178b.jpg]

Another superb miniature, showing a bright green doublet perched on clear quartz. Again, these are larger than the usual from here.


K-183 - Schorl on Quartz - SOLD
Erongo Mountains, Namibia

small cabinet, 8.0 x 7.0 x 6.8 cm
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Schorl on Quartz from Erongo Mountains, Namibia [db_pics/pics/k-183a.jpg]
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Schorl on Quartz from Erongo Mountains, Namibia [db_pics/pics/k-183b.jpg]
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Schorl on Quartz from Erongo Mountains, Namibia [db_pics/pics/k-183c.jpg]
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Schorl on Quartz from Erongo Mountains, Namibia [db_pics/pics/k-183d.jpg]

Sharp,lustrous, isolated schorl crystals of this rare habit,perched starkly on crysatllized quartz matrix!


K-185 - SPHALERITE included in Quartz - SOLD
Billinton Mine, near Kuruman, South Africa

small cabinet, 7.1 x 2.8 x 1.7 cm
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SPHALERITE included in Quartz from Billinton Mine, near Kuruman, South Africa [db_pics/pics/k-185a.jpg]

A really neat locality piece with an approximately 8mm amber-colored, gorgeous sphaerlite crystal completely enclosed within the tip of this undamaged quartz point!


K-192 - Gem Chalcedony pseudomorph after Fluorite - SOLD
Blinkpan, Karas Region, Namibia

cabinet, 18.3 x 10.2 x 3.4 cm
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ex.  Charlie Key

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Gem Chalcedony pseudomorph after Fluorite from Blinkpan, Karas Region, Namibia [db_pics/pics/k-192a.jpg]
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Gem Chalcedony pseudomorph after Fluorite from Blinkpan, Karas Region, Namibia [db_pics/pics/k-192b.jpg]

These beautiful specimens are rare survivors of a small find that produced GREAT carving rough for cabochons and jewelry made of chalcedony (its gemmy and transparent/translucent!), to the detriment of the original specimens from our point of view! Charlie saved some from the wrecker, though, and these are a few selected from a flat we have of this rare and beautiful old material from the 1980s. This one is particularly nice because it shows the lace agate in layers around the chalcedony, that provided the silica for replacement of the fluorite crystals that were originally inside this vug. In other words, this piece preserves the full geological context of the pocket, with crystals in a vug in the ground, changing over timeto another mineral due to alterations in the chemistry and environment. Besides, its beautiful, too!


K-193 - Gem Chalcedony pseudomorph after Fluorite - SOLD
Blinkpan, Karas Region, Namibia

small cabinet, 7.3 x 3.9 x 3.0 cm
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ex.  Charlie Key

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Gem Chalcedony pseudomorph after Fluorite from Blinkpan, Karas Region, Namibia [db_pics/pics/k-193a.jpg]
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Gem Chalcedony pseudomorph after Fluorite from Blinkpan, Karas Region, Namibia [db_pics/pics/k-193b.jpg]

These beautiful specimens are rare survivors of a small find that produced GREAT carving rough for cabochons and jewelry made of chalcedony (its gemmy and transparent/translucent!), to the detriment of the original specimens from our point of view! Charlie saved some from the wrecker, though, and these are a few selected from a flat we have of this rare and beautiful old material from the 1980s. This one is particularly nice because it is a good-sized plate with excellent translucency and good horizons abou the edge. IN person, you'd displayit set down a bit, to better show off the crystals!


K-200 - Ilmenite with Cassiterite on Smoky Quartz - SOLD
Erongo Mountains, Namibia

miniature, 5.6 x 3.5 x 3.1 cm
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Ilmenite with Cassiterite on Smoky Quartz from Erongo Mountains, Namibia [db_pics/pics/k-200a.jpg]

This specimen features a 3 x 3 x 1 cm ilmenite nearly embedded in the quartz matrix. On its edges are perched SAHRP cassiterite crystals to 1.25 cm. Some show twinning, I think. This is a MOST UNUSUAL association! I cannot recall seeing it from any other locality, before. It is the only such ilmenite we have, with epitaxial cassiterite association.


K206 - Hennomartinite and Sugilite in Quartz - SOLD
Wessels Mine

miniature, 3.5 x 2.4 x 1.7 cm
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Hennomartinite and Sugilite in Quartz from Wessels Mine [db_pics/pics/k206a.jpg]
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Hennomartinite and Sugilite in Quartz from Wessels Mine [db_pics/pics/k206b.jpg]
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Hennomartinite and Sugilite in Quartz from Wessels Mine [db_pics/pics/k206c.jpg]

Beautiful specimen hosting a 1.5 cm gem quartz through which you see the sugilite matrix, studded also with minute crystals of (brown) Hennomartinite . RARE MATERIAL found only once at this mine!


K232 - Poldervaartite on Chalcedony-coated Calcite - SOLD
NChwaning II Mine, Kalahari Manganese Fields, South Africa

small cabinet, 7.5 x 4.0 x 2.3 cm
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Poldervaartite on Chalcedony-coated Calcite from NChwaning II Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k232a.jpg]
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Poldervaartite on Chalcedony-coated Calcite from NChwaning II Mine, Kalahari Manganese Fields, South Africa [db_pics/pics/k232b.jpg]

A very well-balanced specimen featuring two gemmy, pristine balls of Poldervaartite perched on crystallized matrix. The Poldervaartite measures 3 cm long and 2 cm across, and is pristine and complete, of highest quality.


K294 - Purple Fluorite on Quartz - $ 2950
Nasik, Maharashtra, India

cabinet, 11.9 x 6.5 x 2.7 cm
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Purple Fluorite on Quartz from Nasik, Maharashtra, India [db_pics/pics/k294a.jpg]
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Purple Fluorite on Quartz from Nasik, Maharashtra, India [db_pics/pics/k294b.jpg]

I was shocked to see purple fluorite from India. Never seen it, in 20 years-plus of looking at Indian specimens. Recently over the last 4 years, we have seen for the first time (at least so I believed and everybody else I know), rounded botryoidal fluorite from India : red and yellow hemispheres from Mahodari in Nasik. Somehow, Charlie had bought and stahed a whole previous pocket of fluorites, and a novel color for India no less, and nobody knew. I BUY A LOT of Indian minerals and believe me, I would have bought ANY purple fluorite from India if i had seen ONE SINGLE specimen out of the tens of thousands of pieces I have been offered over the years. It simply wasn't to be had. I asked Charlie how the hell...and he just chuckled and said he "got good things from time to time an dput them away." Charlie had apparently bought this small pocket in the late 1980s , and it was all he had seen, as well. This is the largest specimen of the small group we found in his collection - nestled in with a large and extensive Indian Collection Suite which we will post later in the year. This piece is pristine , and it positively glows when backlit with the light shining through both the translucent fluorite and the thin quartz late on which it rests. This hemisphere measures 5 cm across. NOT a pale lavender, but a nice rich shade of purple! Rare and unusual, I would say...


K300 - Proustite on Quartz - SOLD
Schlema, Saxony, Germany

miniature, 3.3 x 2.2 x 1.7 cm
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Proustite on Quartz from Schlema, Saxony, Germany [db_pics/pics/k300a.jpg]

A SHARP crystal of wine-red proustite just perched right up atop a pedestal of quartz! NICE thumbnail or small mini! The sharply steepled termination is pristine and the crystal is only contacted on the back and the right side, away from the viewing display.


K328 - Galkhaite (superb!)on Quartz - SOLD
Getchell Mine, Humboldt County, Nevada, USA

small cabinet, 6.8 x 6.6 x 3.8 cm
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Galkhaite (superb!)on Quartz from Getchell Mine, Humboldt County, Nevada, USA [db_pics/pics/k328a.jpg]
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Galkhaite (superb!)on Quartz from Getchell Mine, Humboldt County, Nevada, USA [db_pics/pics/k328b.jpg]

Charlie thought this was perhaps the best specimen around,using the phrase "off the charts," and I can say I have not seen better. It wsa supposedly found about 30-40 years ago. It features dozens of SHARP, wine-red crystals of this very rare thallium-rich species that also has a smorgasboard of other elements in it. Here we have several dozen large-for-species crystals to 4 mm.


KAGEM-1 - Emerald on Quartz - $ 5200 SOLD
Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia

small cabinet, 7.9 x 7.0 x 4.5 cm
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/Emerald-Zambia-85mm_0872.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec01a.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec01b.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec01c.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec01d.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec01e.jpg]

This specimen is a very rich plate of emeralds embedded in massive quartz matrix, with a thin coating of mica-schist on the exposed upper surface where the emeralds pop out of the quartz. This specimen is unusual in that most of the pieces now brought to market from this mine have either quartz or mica but not both on the same specimen, indicating perhaps this was at the boundary layer of the two types of deposition. Overall, it is VERY 3-dimensional and very colorful. The large crystal atop is naturally distorted, "bent," a rare phenomenon in beryls. It is nearly 4 cm long, and is not repaired. It has a lustrous termination, though with minor edge wear around the rim. IN PERSON THESE ARE A MORE VIBRANT GREEN, but come across darker in the photos than in real life. When backlit, of course, they practically glow. This is one of the richest specimens I have seen from these new finds, in terms of overall concentration and mass of emeralds on one plate. Admittedly, the specimen production from here is not very much in terms of quantity yet (and perhaps never will be), but of that production I have seen most of what was prepared in the last year as the mine finally made a specimen-preparation deal to get them out to our market - from that sample, this was fairly impressive for overall impact and concentration. Upper-left professional photo is by Joe Budd.


KAGEM-2 - Emerald on Quartz - $ 11500 SOLD
Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia

small cabinet, 6.8 x 5.8 x 2.0 cm
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/Emerald-Zambia-70mm_0876.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec02a.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec02b.jpg]
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Emerald on Quartz from Kagem Emerald Mine, Kafubu, Ndola, Copperbelt Province, Zambia [db_pics/new2010/ec02c.jpg]

While there were perhaps (only!) several dozen specimens recovered that featured large crystals in matrix, from what I saw of the find, most were repaired at least once if not more - and few had such nice aesthetics as this one. The large central crystal on this expertly trimmed matrix is 6.5 cm tall! It is 1.3 cm wide and 8 mm in depth. This piece stood out to my eye because it has a very good size (for ANY emerald locale) and is tremendously aesthetic, yet miraculously has no repairs. It has a natural tectonic break: here, the crystal broke in geologic time, in situ; and the gap between was filled with later quartz deposition. By careful preparation, the specimen has been preserved on a solid matrix plate of quartz with mica schist on the rear side. Frankly, I am not as much shocked they got it out in one piece, but that the termination was able to be so well-excavated from the surrounding matrix as to be freestanding ( at some risk). The freestanding tip extends about an inch over the matrix rim, now. The crystal is transparent to translucent through its length, though mostly at the top. For this find, the termination is quite good - sharp and even, without etching or damage. This specimen has fine lustre, and a characteristic deep forest-green color this mine is known for (quite darker than most Colombian material). It is not often you see a nearly 3-inch-tall emerald at an affordable price, with any quality to it, from any locale. When I bought the lot here, I felt that the company that brought these to market for the mine owner priced this down due to the (natural) tectonic break within the piece, by too much lower than other specimens. Comparably-sized crystals, some with glued repairs even, sold for in excess of twice this price. So, to me, this was clearly the bargain of the lot in large-sized crystals and i think stands as a real value, and a good specimen both. Upper-left professional photo is by Joe Budd. THIS SPECIMEN IS FEATURED ON THE ARTICLE ON THIS FIND, IN MINERALOGICAL RECORD JAN-FEB 2010, PAGE 66



(click on a page number to go to that page:)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234
235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252
253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270
271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288
289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306
307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
361 362 363 364 365 366 367 368 369 370 371 372

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Rob Lavinsky, rob@irocks.com

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