Founded by Axel Niemi in the early 1950s, the museum also displays a large array of agates and minerals, including quartz,
datolite, Michigan copper, and calcite, alongside other exhibits depicting local history.
The crushed ores are colemanite (Ca2B6O .5H O), ulexite (Na O.2CaO.5B2O3.16H2O),
datolite (2CaO.B2O3.2SiO2.H2O), hydroboracite (CaO.MgO.3B2O3.6H2O) and ascharite (2MgO.B2O3.H2O).
In mid-2009 a single small pocket in the Bor (boron) mine at Dalnegorsk, Primorskiy Kray, produced about 100 thumbnails and a few miniatures of
datolite of a quite new aspect for Dalnegorsk: highly lustrous, transparent, palest green
datolite crystals to 1 cm forming pretty, loose clusters without associated species.
From Talnakh: white pectolite "puff balls" on drusy crusts of colorless
datolite; and crude, barrel-shaped black wurtzite crystals to several centimeters.
Although not a major producer of collector-quality specimens, it has yielded fine examples of heulandite, stilbite, calcite, chalcedony,
datolite and prehnite.
Quartz,
datolite, calcite, anhydrite, hematite, goethite and pyrite are the primary components deposited in these openings.
Datolite ([CaBSiO.sub.4]) is structurally classified as an orthosilicate and is a member of the Gadolinite Group of minerals.
Excellent specimens of
datolite have been coming for about 10 years, Alfredo says, from a road-metal quarry near the village of Erretigotti, Vizcaya (this is the Basque country of northernmost Spain), and the specimens have been circulating at Spanish mineral shows but have not been marketed internationally until now.
An article in the September-October 2000 Mineralogical Record and an update in May-June 2007 made clear that the Millington is, as regards specimens, the newest of the many "traprock" quarries of northern New Jersey, and that its beautiful natrolite, pectolite,
datolite and apophyllite specimens rank among this famous area's best.
Datolite is found extremely rarely at the Fengjiashan mine, as greenish, translucent to transparent crystals reaching 7 cm.
In the Holiday Inn room of "Axinite-PM," a handful of specimens bespoke a nice single-pocket find, last July, of pink apophyllite on
datolite matrix, this not from any of Dalnegorsk's metallic mines but from the nearby Bor mine, where a huge deposit of massive
datolite is exploited as boron ore.
(1939) described amygdules and geodes in the capping basalts, containing axinite, calcite, danburite,
datolite, fluorite, goethite, hematite, pyrite, quartz, schorl and specular hematite.