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113.40 CTS PYROMORPHITE SPECIMEN CHINA [MGW3949]

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Dimensions (mm)
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MINERAL GEM WORLD

PYROMORPHITE SPECIMEN

This is a natural untreated specimen from CHINA

Weight 113.40 cts app

Size 31 x 25 x 17 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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sedagems
sedagems
Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
Mermaid Waters, Australia
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  • gemarab
    gemarab
    Positive

    Great and clear sapphire, beautiful cut ! Great packaging

  • js20031
    js20031
    Positive

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

  • js20031
    js20031
    Positive

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

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Shipping Details

Shipping:
$16.00 21 days via Registered Shipping
Ships from:
Australia

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Overview

Listing Type : Standard
Product ID : 397152
Starts : 27th October 2024 01:35 am PDT
* All prices are in USD