Issue Date | 16.09.2005 |
ID | Michel: 1552-1553 Scott: 1448-1449 Stanley Gibbons: Yvert: UPU: N/A Category: pF |
Author | Ashley Booth |
Stamps in set | 2 |
Value | NOK 5.50 - Thortveitite
(mineral) NOK 6.00 - Fossil radiolaria (Lamprocyclas maritalis), map of Norway and continental shelf, oil rig and ship, pipeline, and geological cross section. |
Size (width x height) | |
Layout | 50 stamps per sheet |
Products | FDC x 1 |
Paper | |
Perforation | 13.35x13 |
Print Technique |
Offset, multicolor |
Printed by | Joh. Ensched, Netherlands |
Quantity | 600,000 each |
Issuing Authority |
One of the stamp subjects, taken from the Continental Shelf, shows the connection between geology and oil and gas recovery. The other shows the world's first scandium mineral, Thortveitite. It was discovered in Setesdal in 1903 and called after Norwegian mineral exporter Olaus Thortveit (1872-1917).
Radiolarians (also radiolaria) are amoeboid protozoa (diameter 0.1-0.2 mm) that produce intricate mineral skeletons, typically with a central capsule dividing the cell into inner and outer portions, called endoplasm and ectoplasm. They are found as zooplankton throughout the ocean, and their skeletal remains cover large portions of the ocean bottom as radiolarian ooze. Due to their rapid turn-over of species, they represent an important diagnostic fossil-found from the Cambrian onwards
Lamprocyclas maritalis:
Shell campanulate, very similar to the preceding
species (Lamprocyclas nuptialis) in form and fenestration, but not so slender
and with different peristome. Length of the three joints = 4:5:6; breadth =
4:10:13. Cephalis subspherical, with a very stout, pyramidal horn of twice the
length, the edges of which are spirally convoluted. Outer coronal of the
peristome with twelve to fifteen short, divergent feet, inner with as many
convergent, longer feet. Dimensions Length of the three joints, a 0.04, b
0.05, c 0.06; breadth a 0.04, b 0.1, c 0.12
FDC | Used covers |
Presentation Pack | |
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Last update 21.11.2017
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