Stamp: Boltwoodite (different formula) (South-West Africa 1990)

  1. Catalogue
  2. South-West Africa
  3. 1990
  4. Minerals
  5. Boltwoodite (different formula)

Boltwoodite (different formula) (South-West Africa 1990)

25 October (South-West Africa ) within release Minerals goes into circulation Stamp Boltwoodite (different formula) face value 18 South African cent

Stamp Boltwoodite (different formula) in catalogues
Michel: Mi:NA-SW 654II
Stamp Number: Sn:NA-SW 631A

Stamp is square format.

Data entry completed
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Stamp Boltwoodite (different formula) in digits
Country: South-West Africa
Date: 1990-10-25
Print: Offset and Lithography
Perforation: Unknown 14½ x 14
Emission: Definitive
Format: Stamp
Face Value: 18 South African cent

Stamp Boltwoodite (different formula) it reflects the thematic directions:

In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form

Stamp, Boltwoodite (different formula), South-West Africa, , Minerals