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Green prehnite - Congo - Kinshasa - 200402665

70
grams
50
mm
9
euros
Country Congo - Kinshasa
Reference
200402665

Size mm
50x40x25
Category
Raw rocks

Country
Congo - Kinshasa
Mineral species
Prehnite

Collection
97 - April 2020
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Characteristics :

Density 2.80
Hardness 6.00 à 6.50
Group Silicate
Formula Ca2Al(Si3Al)O10(OH)2
Cleavage {001} distinct
Break Irrégulière
Chemical composition :

O Oxygen Other no metal 44.5%
Si Silicon Metalloids 21.3%
Ca Calcium Alkaline earth metal 20.27%
Al Aluminum Poor metal 13.64%
H Hydrogen Other no metal 0.25%
99.98%
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Shipping time
Your orders are usually shipped the day of the order and at the latest after 3 working days.

Delivery delay
Once the package is supported by the postal service, delivery times are those announced by the Post (letter followed or Colissimo followed). Parcel shipping from France.

Returns and Refund
Our refund and return policy lasts 14 days. You can read the details on the "return and delivery" page.

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