Strontianite


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strontianite

[′strän·chē·ə‚nīt]
(mineralogy)
SrCO3 A pale-green, white, gray, or yellowish mineral of the aragonite group having orthorhombic symmetry and occurring in veins or as masses; hardness is 3.5 on Mohs scale, and specific gravity is 3.76.

Strontianite

 

a mineral; natural strontium carbonate. Stron-tianite is white or light yellow and has the chemical composition Sr[CO3]. It was discovered in 1787 near the Scottish village of Strontian, which accounts for its name. Strontianite often contains CaCO3 as an admixture (strontiocalcite) and, more rarely, BaO and PbO. It crystallizes in the orthorhombic system, usually forming granular, rounded aggregates and, more rarely, prismatic or acicular crystals. Its hardness on Mohs” scale is 3.5–4, and its density is 3,600–3,800 kg/m3. Strontianite is found in certain hydrothermal veins together with sulfides, calcite, and bar-ite; most often, it occurs as veins in limestones and clay rocks.

References in periodicals archive ?
One of the present authors (PT) observed an open fracture containing well-crystallized dawsonite with strontianite and calcite.
Mineralization in the limestone formations exposed in the Francon quarry is limited to occasional small cavities, veins and solid pods containing common minerals such as calcite, dolomite, strontianite, barite, quartz, pyrite and marcasite.
In the Hilairitovoye pegmatite, holotype material is associated with: microcline, albite, calcite, nenadkevichite, hilairite, catapleiite, strontianite, donnayite-(Y), synchysite-(Ce), pyrite, etc.; in a pectolite-aegirine-microcline vein other associated minerals are: natrolite, calcite, neodymian ewaldite, etc.
(1933) The occurrence of strontianite at Sierra Mojada, Mexico.
Strontianite is rare in the north Pennines (see Young, 1985b).
This has been complemented by the discovery of a suite of primary minerals which are uncommon in the Mississippi Valley type deposits of the north Pennines including bournonite, millerite, strontianite, ullmannite, and (perhaps) hydromagnesite.
Associated minerals are: calcite, dolomite, strontianite, ewaldite, minerals of the serpentine and apatite groups, pyrrhotite, pyrite, chalcopyrite, sphalerite, and pyrochlore.
Naturally it's easy for anyone to enjoy simply looking at case after case of phenomenal fluorite, calcite, galena, sphalerite, witherite, strontianite etc.
While it works with highly reactive species such as calcite and strontianite, it is less effective for slowly dissolving carbonates.
A group of us speculated as to whether the unknown was one species or another; suggestions included leifite, nenadkevichite, apatite, dawsonite, natrolite, phillipsite, strontianite, and aragonite.
Carbonates Ancylite-(Ce) Ancylite-(La) Aragonite Bastnasite-(Ce) Calcite Cerussite Cordylite-(Ce) Dawsonite Dolomite Donnayite-(Y) Kukharenkoite-(Ce) Rhodochrosite Siderite Strontianite Synchysite-(Ce) VUK11
This orebody provided some of the most spectacular specimens ever found in the district: worldclass examples of fluorite, witherite, benstonite, strontianite and barite.