Rosenbuschite (original) (raw)

Sub-Vitreous, Waxy, Greasy

Colour:

Tannish brown to medium brown, grayish brown

Cleavage:

Perfect
{010}, also {100} fair

Fracture:

Irregular/Uneven, Splintery

Density:

3.30 g/cm3 (Measured) 3.27 g/cm3 (Calculated)

Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 10.12 Å, b = 11.37 Å, c = 7.35 Å
α = 90.63°, β = 100.75°, γ = 112.01°

Ratio:

a:b:c = 0.89 : 1 : 0.646

Unit Cell V:

767.28 ų (Calculated from Unit Cell)

Morphology:

Rod-like irregular crystals, also fibrous; rarely in cavities; acicular crystals.

Place of Conservation of Type Material:

Mineralogical-Geological Museum, University of Oslo, Oslo, Norway, 8962 (holotype).

Geological Setting of Type Material:

Nepheline syenite pegmatite,

Associated Minerals at Type Locality:

Reference:

Brögger, W. C. (1887) Forelöbig meddelelse om mineralerne på de sydnorske augit- og nefelinsyeniters grovkornige gange. Geologiska Föreningen i Stockholm Förhandlingar 9: 247-274

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.