Baryte – Exceptional Gem-Clear Double-Terminated Honey Crystal on Matrix

Specifications

Species: Barite
Origin: Linwood Mine, Buffalo, Scott County, Iowa, USA
Dimensions: 8.9 × 6.1 × 3.0 cm
Weight:
ID: PM.0129

Description

Ex. Dan & Diana Weinrich Collection An exceptional, highly refined baryte specimen from the celebrated Linwood Mine, distinguished by a remarkably large, gemmy crystal dramatically positioned on a restrained crystalline matrix. The principal baryte reaches approximately 7.5 cm and dominates the composition, giving the specimen the architectural presence of a fine American mineral classic. The baryte exhibits a superb thick tabular-to-prismatic habit, with broad, sharply defined faces and unusually strong development at both ends. Most notable is its double-terminated character: the upper termination forms an elegant pointed crown of intersecting faces, while the opposite end is also naturally crystallized rather than simply disappearing into matrix. This degree of crystallographic completeness is particularly desirable in a substantial, freestanding Linwood baryte. Color varies attractively through the crystal from pale champagne and warm honey-yellow to smoky brown, with pronounced internal growth zoning creating darker horizontal bands through the lower and central portions. These distinct zones give the crystal considerably more visual complexity than a uniformly colored example. Under direct illumination, warmer golden tones emerge from the clearer sections. Transparency is exceptional for a crystal of this size. Large portions are transparent to highly gemmy, particularly through the upper half, while inclusions, internal veils, growth features and localized fractures introduce complexity toward the center and lower termination. Several internal fractures produce vivid spectral rainbow flashes, an especially attractive feature visible from multiple viewing angles. The surface quality is one of the specimen's strongest attributes. Broad faces possess brilliant vitreous to nearly adamantine luster, producing strong mirror-like reflections. Fine natural growth textures are visible on several faces without substantially diminishing the overall brilliance. The photographs indicate minor edge/termination irregularities, but the crystal retains an impressively sharp and commanding overall form. The principal baryte is perched on a comparatively minimal pale gray-white, finely crystallized matrix, apparently dominated by drusy carbonate material typical of the Linwood assemblage. The matrix wraps selectively around the lower portion and sides of the baryte while leaving the great majority of the crystal exposed. This limited coverage is aesthetically important: rather than competing with the baryte, the matrix acts as a sparkling natural pedestal and provides contrasting texture and color. Compositionally, the specimen is exceptionally successful. The large crystal rises prominently from the matrix with strong vertical emphasis, while the asymmetric spread of matrix provides sufficient visual counterweight without obscuring the baryte. From the principal viewing angles, the specimen combines gemminess, rich honey-smoky coloration, dramatic zoning, brilliant luster, crystallographic completeness and restrained matrix association. The Dan and Diana Weinrich provenance adds considerable collector significance. Given the Weinrich association with important Linwood material and the stated history that this was selectively retained from the mine's notable production, the provenance is particularly appropriate for a specimen of this caliber. Taken as a whole, this is an elite Linwood baryte: unusually large and transparent, strongly lustrous, richly colored, distinctly zoned and, most importantly, dramatically double terminated on matrix. The combination places it well above the quality normally encountered from the locality and makes it a compelling museum-grade representative of one of the classic modern American baryte occurrences. https://vimeo.com/1043766859

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