Spurrite is a white, yellow or light blue mineral with monoclinic crystals. Its chemical formula is Ca 5 (Si O 4) 2 CO 3. [5] Spurrite is generally formed in contact metamorphism zones as mafic magmas are intruded into carbonate rocks. [6] Spurrite's space group is P 2/a.

Colourless, grey-white, lilac-grey. Named by Fred Eugene Wright in 1908 after Josiah Edward Spurr (1 October 1870, Gloucester, Massachusetts, USA - 12 January 1950, Orlando, Florida, USA), economic geologist who collected the first specimens. He led expeditions to mapping the interior of Alaska at the beginning of the gold rush.

Contact zone between limestone and diorite. Velardena mining district, Mexico. Link to MinDat.org Location Data. Named for Josiah Edward Spurr (1870-1950), American geologist. Comments: White veins of bredigite in massive gray spurrite (slabbed specimen). Location: Camphouse, Ardnamurchan, Argyll, Highland, Scotland. Scale: See Photo.

Spurrite is a white, yellow or light blue mineral with monoclinic crystals. Its chemical formula is Ca5(SiO4)2CO3. [1]

2023年10月28日 · Isomorphism and a similarity of the thermal, baric and compositional (C-B substitution) deformations of spurrite-like structures are discussed. Spurrite, Ca 5 (SiO 4) 2 (CO 3), is a long known (Spurr and Garrey 1908; Wright 1908) and intensively studied mineral, found in nature mainly in zones of contact metamorphism (Marincea et al. 2013).

Spurrite, Ca 5 (SiO 4) 2 (CO 3), tilleyite, Ca 5 (Si 2 O 7) (CO 3) 2, and scawtite, Ca 7 (Si 6 O 18) (CO 3)·2H 2 O, are the only calcium carbonate–silicate minerals known to date; all three form in high-temperature skarns.

Spurrite is a mineral with formula of Ca 5 (SiO 4) 2 (CO 3). The IMA symbol is Spu.

Polymorphism & Series: Dimorphous with paraspurrite. Occurrence: A product of high-temperature thermal metamorphism along the contact between carbonate rock and ma ̄c magma. Association: Gehlenite, merwinite, tilleyite, hillebrandite, scawtite, kilchoanite, rankinite, larnite, foshagite, wollastonite.

1973年1月1日 · This investigation focuses on the change of C-S-H gels in Portland cement (PC) paste and PC/ground granulated blast-furnace slag (GGBFS) blended paste at elevated temperature up to 800 °C. Spark-like phase, which might be spurrite, can be found in the inner product of C 3 S in PC paste when the temperature is higher than 600 °C. The gels in ...

Unusually bright coloured purple-violet massive spurrite skarn. Associating minerals are brownish-grey corroded gehlenite grains, secondary white Ca-silicates, abundant but small grains of reddish-brown perovskite. Specimen size is 5x2.5x2 cm. Collected by Igor V. Pekov in 2007 on the Western outcrop of the locality. Pavel M. Kartashov ...