Crocodile Jasper
A rock subtype
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Name:
The name "crocodile jasper" is said to refer to the stone's resemblance to amphibian eyes.
It is also known as Kabamba Jasper or aka Kabamba Jasper.
It is also known as Kabamba Jasper or aka Kabamba Jasper.
A tradename for a greenish colored volcanic rhyolite rock quarried by Norcross- Madagascar in a 6 km2 large area in Madagascar (probably in the Tsiroanomandidy area, but this is not been verified).
It is commonly, though erronously, sold as jasper or as a stromatolitic rock, which it is not.
The EPI-Institute in Germany has studied the rock by thin section and XRD. The greenish colored rock consist of the minerals quartz, pyroxene (aegirine), albite, and K feldspar. The characteristic, blackish, rounded aggregates consist of needles of amphiboles (riebeckite to paragasite in composition).
See also messageboard at https://www.mindat.org/forum.php?read,62,421984,422090#msg-422090
It is commonly, though erronously, sold as jasper or as a stromatolitic rock, which it is not.
The EPI-Institute in Germany has studied the rock by thin section and XRD. The greenish colored rock consist of the minerals quartz, pyroxene (aegirine), albite, and K feldspar. The characteristic, blackish, rounded aggregates consist of needles of amphiboles (riebeckite to paragasite in composition).
See also messageboard at https://www.mindat.org/forum.php?read,62,421984,422090#msg-422090
Unique Identifiers
Mindat ID:
52559
Long-form identifier:
mindat:1:1:52559:6
GUID
(UUID V4):
(UUID V4):
59708c61-f4c8-4243-a22f-bb108ab51e37
Classification of Crocodile Jasper
Mineralogy of Crocodile Jasper
Essential minerals - these are minerals that are required within the classification of this rock:
Amphibole | (Na, K, ◻)(Ca,Na)2(Mg,Fe,Al)5((Si,Al)8O22)(OH,F,Cl,O)2 |
Feldspar > Alkali Feldspar > Albite | Na(AlSi3O8) |
Feldspar > Alkali Feldspar > K Feldspar | Potassium-dominant feldspars with variable crystal symmetry and Al-Si ordering state; they are a subgroup of ... |
Pyroxene > Clinopyroxene > Aegirine | NaFe3+Si2O6 |
Silica > Quartz | SiO2 |
Pronunciation of Crocodile Jasper
Pronunciation:
Play | Recorded by | Country |
---|---|---|
Jolyon Ralph | United Kingdom |
Synonyms of Crocodile Jasper
Internet Links for Crocodile Jasper
mindat.org URL:
https://www.mindat.org/min-52559.html
Please feel free to link to this page.
Please feel free to link to this page.
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