Newberyite

Newberyite Locality: Skipton Caves (Skipton lava caves; Mt Widderin Caves), Mt. Widderin (Anderson’s Hill), Skipton, Corangamite Shire, Victoria, Australia 3.2 x 2.5 x 1.9 cm © Rob Lavinsky

Chemical Formula: Mg(HPO4)·3H2O
Locality: Skipton lava tube caves, 40 km southwest of Ballarat, Victoria, Australia.
Name Origin: Named for James Cosmo Newbery (1843-1895), geologist, Melbourne, Australia, who initially found the mineral.

History

Discovery date : 1879
Town of Origin: GROTTES DE SKIPTON, BALLARAT, VICTORIA
Country of Origin: AUSTRALIE

Optical properties

Optical and misc. Properties : Fragile, cassant – Transparent
Refractive Index: from 1,51 to 1,53
Axial angle 2V : 45°

Physical Properties

Cleavage: {010} Perfect, {001} Indistinct
Color:     Colorless, Gray brown, Grayish.
Density: 2.1
Diaphaneity: Transparent
Fracture: Brittle – Uneven – Very brittle fracture producing uneven fragments.
Hardness: 3-3.5 – Calcite-Copper Penny
Luster: Vitreous (Glassy)
Streak: white

Photos :

Newberyite Locality: Skipton Caves (Skipton lava caves; Mt Widderin Caves), Mt. Widderin (Anderson’s Hill), Skipton, Corangamite Shire, Victoria, Australia Dimensions: 24 mm x 18 mm x 20 mm Photo Copyright © Keith Compton
Newberyite with Hannayite Locality: Mount Widderin lava caves, Skipton, Victoria, Australia (Type Locality for Newberyite and Hannayite) Overall Size: 3x2x1.5 cm Crystals: micro to 10 mm © JohnBetts-FineMinerals
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