SOLD Epidote on Pericline (Albite)
stock #SOLD 20.1-879
Acushnet Quarry (Warren Bros.) Acushnet, Bristol County
5.2 x 3.73.2 CM (small cabinet/ large miniature)
new year 2021
An unusual USA find from Alpine Clefts that were found in the Acushnet Quarry on Massachusetts. These clefts were the source of some fine Adularia, Apatite and Epidote, a rare context on this continent. The Pericline is formed in distinct pink and white zoned crystals that are the matrix for a jumble of jackstraw prisms of Epidote. The luster and color of the Epidote is unusually good for this find and the crystals are transparent, up to 1.4 CM though most are smaller. In excellent condition, an attractive alpine style specimen not often available and quite rare from this continent.
A long, slender perfectly terminated crystal of Imperial Topaz from the famed Ouro Preto locale. This has the rare zoned inclusion of Hematite inside the lower portions of the crystal. In person the top section is bright, gemmy transparent and very glassy. The lower section is also gemmy in some spots and on the edges, but the dark inclusions are opaque in the center. In exceptional, undamaged condition, this color zoning is rare and this piece is an excellent example. Imperial Topaz is unique to this area, the form and color is classic. While inclusions are not that uncommon from here, these "bi-color" crystals are remarkable, rare and impressive.
A classic purple, blue, yellow Fluorite with well-defined sharp cubes in a cluster. Some of the square faces of the cubes have distinct geometric voids or hoppers with complex cubic forms. This Fluorite looks dark without some backlighting (see the second photo) but the effect of that backlight brings out excellent color zoning, The cubes are complete, glassy and in very good condition, some faces are perfectly flat as well. From the Cave in Rock area of Southern Illinois, this is a very pretty yet affordable dark Fluorite with great colors hiding inside.
Fluorite on Schorl
Erongo Mountain, Karibib
6.8 x 5.3 x 4.6 CM (cabinet)
new year 2021
Colorful zoned Fluorite crystals are perched on a jumble of lustrous Schorl crystals from Erongo. Close exam of the Fluorites shows they are also included by dark tourmalines some of which have areas of transparency. The Fluorites have some spots of deep purple set in a light blue background. These crystals are somewhat etched and show some spinel twinning as well. The Schorl crystals are in two habits some with the fibrous habit faces and others with prismatic forms. All are quite lustrous and with two different termination types. Overall very esthetic and striking specimen from a find in 2018. The pegmatites of Erongo have given up some remarkable pockets over the years many of which were unique having unusual habits and forms not seen in any other. We have not seen any more recent finds of this style.
Calcite with Fluorite
Denton Mine, Harris Creek Sub District, Hardin County
6.8 x 4.9 x 3.8 (cabinet)
new year 2021
A southern Illinois classic, a mass of transparent, gemmy Calcite crystals are the sparkling background to some small purple to blue Fluorites. The bright luster of these Calcites are hard to appreciate in photos but in person the visual impact is strong. This choice Denton Mine specimen is from the collection of Les Hitchings which he obtained in 1992, from the last period of mining there which produced some exceptional Calcites.
Blocky habit colorless, transparent crystals of Anglesite with a tiny amount of Sulphide adhering to the edges. In excellent condition there are several complex face modifications seen on close exam and a few inclusions that are likely Galena. The transparent crystals have internal iridescent "rainbows" and the luster is bright and glassy. Anglesite crystals are known from many Lead mines worldwide but only a very few localities have produced such fine large crystals, and Tsumeb is high on the short list. A very fine undamaged and esthetic example of the specie and for this habit.
A classic pseudomorph of Malachite replacing and encrusting an Azurite crystal. The former Azurite shows the original crystal form perfectly, and is perched on a contrasting layer of bright Calcite crystals. No damage and a nice chatoyancy on the wide faces of the crystals. The matrix also has a few areas of Chalcotrichite on the underside but the Malachite is the real focus.
A superb display grade example of the rare and usually unimpressive to ugly mineral. Julgoldite is a Silicate species in the Pumpellyite family, found in Basaltic flows with Zeolites. It is almost never seen in attractive specimens as it is typically just micro crystals, coatings or dark masses. This is by far the best example I have ever seen from any locality, and it has several habits of this specie well-presented on this piece. The Julgoldite forms hairy acicular crystals seen as individuals, sprays and in clusters or balls over 1.6 CM across. Most of the crystals are a translucent green but some are near black and a few in one corner are a bright golden hue. The balls of translucent Chalcedony add a nice contrast as well. A fine addition for any serious collection of Zeolites, Trap species or Indian minerals. The Fe3+ designation is made without testing but presumed correct as all other examples tested from Jalgaon are this and not the Fe2+