Merwinite, Tilleyite, Hillebrandite, Scawtite, Kilchoanite,
Rankinite, Larnite, Foshagite, Wollastonite
Spurrite was first described in 1908 from an occurrence in the Terneras Mine, Velardeña District, Durango, Mexico. It was
named by Fred Eugene Wright in 1908 after Josiah Edward
Spurr (October 1, 1870 - January 12, 1950), American
economic geologist, exoplorer and author. Mount Spurr in southwestern Alaska
Crater on the moon are also named for him. J. E. Spurr led two expeditions of historic importance in Alaska for the United States Geological Survey.
In 1896 he led the first expedition to map and chart the interior of Alaska
and in 1898 he went down the length of the Kuskokwim River.
After leading these two expeditions Spurr became the world’s leading geological consultant.
He published well over a hundred articles in scientific journals, books and monographs.
His books were seen as the definitive work on Alaskan minerals during the Alaska Gold Rush.
is a calcium silicate carbonte that is typically white
to gray in color but may also be found in other colors
such as lilac at the Negra Mine, Maconi, Mun. de Cadereyta,
Querataro, Mexico; unusually bright violet-purple at
the Fuka Mine, Takahashi City, Okayama Prefecture, Japan;
bluish-gray at the Crestmore Quarries, Crestmore, Riverside
County, California, USA; and lavender-gray from South
Sisters Peak, Tres Hermanas District, Luna County, New
Mexico, USA. Spurrite gives off a green cathodoluminescence
when exposed to shortwave UV light. A unique characteristic of Spurrite is that it abides by two twin laws. Polysynthetic twinning can occur along its (001) axis
and another type of twinning can occur parallel to its optical axes.
is also found at Seekante, Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany;
Velardeña District, Mun. de Cuencamé, Durango, Mexico;
Carneal, Glenoe, Co. Antrim, Northern Ireland, UK; and
Christmas Mountains, Brewster County, Texas, USA.