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98.95 CTS PYROMORPHITE SPECIMEN CHINA [MGW3950]

SKU
Afmetingen (mm)
37.000 x 34.000 x 16.000mm
Gewicht (cts)
98.950
Kleuren

MINERAL GEM WORLD

PYROMORPHITE SPECIMEN

This is a natural untreated specimen from CHINA

Weight 98.95 cts app

Size 37 x 34 x 16 mm app

Pyromorphite is a mineral species composed of lead chlorophosphate: Pb5(PO4)3Cl, sometimes occurring in sufficient abundance to be mined as an ore of lead. Crystals are common, and have the form of a hexagonal prism terminated by thebasal planes, sometimes combined with narrow faces of a hexagonal pyramid. Crystals with a barrel-like curvature are not uncommon. Globular and reniform masses are also found. It is part of a series with two other minerals: mimetite(Pb5(AsO4)3Cl) and vanadinite (Pb5(VO4)3Cl), the resemblance in external characters is so close that, as a rule, it is only possible to distinguish between them by chemical tests.

They were formerly confused under the names green lead ore and brown lead ore (German: Grünbleierz and Braunbleierz) it was named pyromorphite by J. F. L. Hausmann in 1813. The name is derived from the Greek for pyr (fire) and morfe (form) due to its crystallization behavior after being melted.

 

COLLECTORS’ INFORMATION:  Pyromorphite is collected for its unusual chemistry, pleasing lime-green color, and hexagonal crystal shapes that often have distinctive, cavernous or pitted terminations. 

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18980e feedback

  • gemarab
    gemarab
    Positief

    Great and clear sapphire, beautiful cut ! Great packaging

  • js20031
    js20031
    Positief

    AAAA+++ Very Happy! Just like the pic.

  • js20031
    js20031
    Positief

    AAAA+++ Very Happy! Just like the pic.

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Overzicht

Vermeldingstype : Standard
Product-ID : 758336
Begint : 25th October 2024 09:42 pm PDT
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