L'Ammonite 23 and 24 Passage du Commerce 79000 Niort. Our shops are opened all year long from tuesday to saturday from 10h00 to 12h30 and from 2h30 to 7h00 pm.
Celestite cluster of crystals from Madagascar.
Celestite contains strontium, oxygen and sulfur.
The blue crystals are small but very bright
It is used for paint production but
also in the nuclear industry.
Weight 409 gr.
Sample size 90x70x30 mm.
Celestite half geode from Mahajanga in Madagascar.
Strontium sulfate, chemical formula Sr (SO4).
It is used for example to produce paintings
or varnishes.
Crystals larger than 50cm have been found
in United States.
Sample size 125x85x40 m.
Weight 860 gr.
Celestite half geode from Madagascar.
Celestite is composed of strontium, sulfur and oxygen.
The elongated blue crystals are prismatic and transparent.
It is used for the extraction of strontium for the industry.
Dimensions 19.5x17.5 cm.
Weight celestite about 4 kg
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