- 25 [61] [62] [63] (IUPAC:
sodium iron(III)
hexaoxy disilicate) Aegirine-
augiteI (pyroxene: IMA1988 s.p., 1988 Rd) 9.DA.20 [64] [no] [no]
Aenigmatite (sapphirine:...
-
north of Igaliku,
there are the
Gardar alkaline pegmatitic intrusions of
augite syenite, gabbro, etc. To the west and
southwest are
Palaeozoic carbonatite...
-
silica is
present in
greater quantity over
ferromagnesian minerals, such as
augite, hornblende,
enstatite or biotite,
occur rather than olivine.
Unless potash...
- a
miscibility gap
between pigeonite and
augite compositions.
There is an
arbitrary separation between augite and the diopside-hedenbergite (CaMgSi2O6 −...
-
large glossy crystals of
augite in a dark grey
matrix made up of
small crystals of
augite and feldspar. This is
unusual as
augite is
usually dull. In central...
- A****inite
Adamite Adamsite-(Y)
Adelite Admontite Adranosite Aegirine Aegirine-
augite Aenigmatite Aerinite Aerugite Aeschynite-(Ce) Aeschynite-(Nd) Aeschynite-(Y)...
-
relative to
other basalts and by the
presence of
olivine and titanium-rich
augite in its groundm**** and phenocrysts, and
nepheline in its CIPW norm. Alkali...
-
smaller amount of
plagioclase with
small amount of calcite,
hornblende and
augite in a
matrix of
sandy clay) that was
melted by the
atomic blast. It was first...
-
forms complete solid solution series with
hedenbergite (FeCaSi 2O 6) and
augite, and
partial solid solutions with
orthopyroxene and pigeonite. It forms...
- respectively.
Where present,
hornblende is
typically found as a rim
around augite crystals or as
large grains enclosing smaller grains of
other minerals (poikilitic...
