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Allanite crystals - Norway - 210505366

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Allanite crystals Allanite crystals
  • Allanite crystals
Contractual photos showing the object you will receive when ordering. The photos were taken in order to obtain the most faithful possible rendering of the object.
780
grams
12
cm

SOLD
Country Norway
Reference
210505366

Size mm
120x90x70
Category
Crystallization

Country
Norway
Mineral
Allanite-(Ce)

Collection
217 - April 2021
Translate to :

Allanite (also called orthite) is a group of sorosilicate minerals within the larger group of epidotes that contains a significant amount of rare earth elements. The mineral is mainly found in metamorphosed sediments rich in clay and felsic igneous rocks.

Characteristics :

Density 3.30
Hardness 5.50
Group Silicate
Formula CaCeAl2Fe2+(Si2O7)(SiO4)O(OH)
Cleavage {001} imparfait, {100} imparfait
Break Conchoidal
Chemical composition :

O Oxygen Other no metal 33.84%
Ce Cerium Metal lanthanides 27.35%
Si Silicon Metalloids 13.71%
Al Aluminum Poor metal 9.88%
Fe Iron Transition metal 6.81%
Y Yttrium Transition metal 4.34%
Ca Calcium Alkaline earth metal 3.91%
H Hydrogen Other no metal 0.16%
100%

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Your orders are usually shipped the day of the order and at the latest after 2 working days.

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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.

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

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