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White dogtooth calcite to about 8 mm grow preferentially on colorless quartz on this unusual cabinet specimen. Some of the calcite is doubly-terminated and there are scattered damaged crystals, especially on the reverse side. The calcite slightly fluoresces pink under LW UV. Ex. Miller Calcite collection (with label) and my personal collection; also with a damaged older label. 12.5 x 11.0 x 5.6 cm.
From my personal collection, a 19th century specimen of tourmaline (probably schorl) in a talc schist matrix. The tourmaline crystals measure to 2.7 cm. Ex. Eduard Ruppell, Senckenberg Museum collections with labels (shown). 10.7 x 7.8 x 4.3 cm.
Excellent 19th century specimen of dull gray galena crystals to 5 mm accompanied by small siderite crystals and a few quartz crystals. Under magnification, some microcrystals of rutile are also visible. Ex. Dr. G. Garbari collection with label. 6.1 x 4.6 x 2.1 cm.
Sprays of the rare inosilicate wollastonite (to about 4 mm) line a protected vug in typical volcanic matrix from Monte Somma. The wollastonite is undamaged. From my personal collection. 8.2 x 4.8 x 3.8 cm.
From my personal collection, this is a fine and rich specimen of colorless to yellow acicular klebelsbergite on a doubly-terminated, corroded stibnite crystal. Klebelsbergite is a fairly rare alteration product of stibnite. 8.4 x 2.6 x 1.5 cm.
From the type locality, an extremely rich specimen of this rare borate with crystals to about 2 mm. There are also scattered balls of dypingite in association. From my personal collection. 9.8 x 7.3 x 3.0 cm.
From my personal collection, this is a fine, honey-colored cluster of baryte from Sardinia. The largest crystal measures 5.4 x 4.1 cm, with a slight fault on the tip. 5.8 x 5.1 x 3.7 cm.
From my personal collection, this is a fine example of alpine rutile with chlorite from Italy. The rutile is well-crystallized in geniculated twins with a nice metallic, reddish luster (as can be seen in the photos.) The rutile measures to about 7 mm. Comes with an old label from Pfeiffer-Belli. 7.2 x 4.9 x 3.7 cm.
Excellent miniature of undamaged apatite crystals on a matrix of siderite. The apatite crystals are barrel-shaped, lustrous, and measure to 9 mm. As shown in the photos, they have a nice zoned, green color. 4.8 x 3.9 x 1.9 cm.
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