Table of Contents

• The Landelies Quarry: The Limestones of the River La Sambre by Raph Mydlak 1–6
• Fluorescent Petroglyphs in Southern Arizona by Dan and Lorena Moore 7–8
• Whetting Your Witherite by Howie Green 8
• W Is for Witherite by Simone Conti 9–13
• Witherite from Cave-in-Rock, Hardin Co., Illinois, USA by Various contributors 14–23
• Witherite from the Rampgill Mine, Alston Moor District, Cumbria, England by Various contributors 24–27
• Late Arrival: Witherite from Cave-in-Rock, Hardin Co., Illinois, USA by Andrew Silver 27
• Manuel Robbins’ Fluorescent Mineral Collection Donated to the Yale Peabody Museum by Harold Moritz 28–29
• Supplying High-Quality UV Lighting to North America and the World by — 31

The Landelies Quarry: The Limestones of the River La Sambre

By Raph Mydlak · pp. 1–6

Landelies Quarry in Hainaut, Belgium, is an active source of Carboniferous limestone and unusually varied calcite crystals. The article outlines the quarry’s history, its limestone formations and uses, and the minerals found there. It also describes the colors and responses of Landelies calcite under different ultraviolet wavelengths, relating those emissions to manganese, cerium, and organic impurities. Photographs show quarry exposures and specimens, including calcite with visible cerium-related emission.

Fluorescent Petroglyphs in Southern Arizona

By Dan and Lorena Moore · pp. 7–8

Petroglyphs on a granitic dike south of Tucson are examined in daylight and under shortwave ultraviolet light. The article discusses the rock’s composition, its slowly forming iron- and manganese-rich desert varnish, and the uncertain age and cultural attribution of the carvings. Differences in weathering and the visibility of fluorescent feldspar suggest that ultraviolet inspection might help distinguish glyphs made at different times when the host rock contains fluorescent minerals.

Whetting Your Witherite

By Howie Green · p. 8

A call for members to contribute photographs of witherite specimens follows earlier successful photo collections devoted to apatite-group minerals. The page features a specimen from the Minerva No. 1 Mine in Cave-in-Rock, Illinois, with terminated witherite crystals, fluorite, and non-fluorescent sphalerite. Views show the specimen in white light, under longwave ultraviolet illumination, and immediately after the lamp is switched off, making its afterglow visible.

W Is for Witherite

By Simone Conti · pp. 9–13

Witherite’s chemistry, crystal form, history, and varied responses to ultraviolet light are explored through specimens and a puzzling sample from Kuiu Island, Alaska. Raman analysis confirms that sample as witherite, while its reported sunlight-driven color change remains unverified. The article explains the mineral’s pseudo-hexagonal cyclic twins, reviews its history and likely type locality at Anglezarke, and compares material from Cave-in-Rock, Rampgill, and other localities. An editor’s note addresses the hazards of ingesting barium carbonate.

Witherite from Cave-in-Rock, Hardin Co., Illinois, USA

By Various contributors · pp. 14–23

A multi-page collection of Cave-in-Rock witherite specimens centers on material from the Minerva No. 1 Mine and includes examples from other mines in the district. Photographs show pseudo-hexagonal, striated crystals and sprays, sometimes associated with fluorite, calcite, sphalerite, or paralstonite. Captions document differing colors of ultraviolet response and afterglow, as well as specimens photographed from multiple sides and a notably large aggregate of yellow crystals.

Witherite from the Rampgill Mine, Alston Moor District, Cumbria, England

By Various contributors · pp. 24–27

Specimens from the Rampgill Mine at Nenthead show witherite in combination with fluorite, barytocalcite, calcite, and barite. The illustrated material ranges from crystal-bearing pieces to a botryoidal white coating on fluorite. Captions record contrasting specimen colors under ultraviolet illumination, including blue-white, pink, red, and aqua responses, as well as phosphorescence. The gallery also includes a late-arriving Rampgill specimen containing hydrozincite among its identified minerals.

Late Arrival: Witherite from Cave-in-Rock, Hardin Co., Illinois, USA

By Andrew Silver · p. 27

A late-arriving Minerva No. 1 Mine specimen from Cave-in-Rock displays a prominent witherite crystal alongside numerous tiny crystals. White-light and longwave-ultraviolet photographs accompany a caption noting the large crystal’s growth patterns when viewed along its 001 axis. The specimen highlights the pseudo-hexagonal form discussed earlier in the issue and invites close attention to the small crystals at the center of the piece.

Manuel Robbins’ Fluorescent Mineral Collection Donated to the Yale Peabody Museum

By Harold Moritz · pp. 28–29

Manuel Robbins has donated his approximately 1,800-specimen mineral collection to the Yale Peabody Museum. The account follows the collection’s move from Robbins’s home in New Jersey to Yale, where it is being sorted, cleaned, and cataloged for long-term study and teaching. The collection includes material from the Franklin-Ogdensburg district, Greenland, and Terlingua-type calcite localities, along with fluorescent witherite, grossular, and rhodochrosite. Photographs document the collection and the people involved in its transfer.

Supplying High-Quality UV Lighting to North America and the World

p. 31

A full-page advertisement promotes the supply of high-quality ultraviolet lighting to customers in North America and elsewhere in the world. The printed page presents this service as its central message. The extracted text provides no further product specifications, prices, contact details, or supplier name, so those details cannot be identified from the available page text.