Ordanchite
A rock subtype
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A local name for a volcanic rock, variously described as a variety of trachyandesite and tephrite, consisting essentially of andesine and haüyne with resorbed hornblende, augite and minor olivine.
Unique Identifiers
Mindat ID:
55303
Long-form identifier:
mindat:1:1:55303:0
GUID
(UUID V4):
(UUID V4):
6592634b-9c2c-463f-9b32-0fcf10b8770b
Classification of Ordanchite
Mineralogy of Ordanchite
Essential minerals - these are minerals that are required within the classification of this rock:
| Amphibole > Hornblende | An informal name for dark green to black amphiboles, mostly ferro-hornblende or ... |
| Feldspar > Plagioclase > Andesine | (Na,Ca)[Al(Si,Al)Si2O8] |
| Feldspathoid > Haüyne | Na3Ca(Si3Al3)O12(SO4) |
| Pyroxene > Clinopyroxene > Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
| Olivine | Commonly used as a synonym for a member of the Fayalite-Forsterite Series, but more generally and properly ... |
References for Ordanchite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lacroix, A. (1917). Les laves à haüyne d’Auvergne et leurs enclaves homoeogènes: importance théorique de ces dernières. Compte Rendu Hebdomadaire des Séances de l’Académie des Sciences. Paris. Vol.164, p.581–588.
Internet Links for Ordanchite
mindat.org URL:
https://www.mindat.org/min-55303.html
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