- the gossans. The gold of the
primary veins was
concentrated into the
limonites of the
deeply weathered rocks. In
another example the
deeply weathered...
-
spherical and have
concentric layers reaching 10 mm in diameter. Bauxites,
limonites, and
siderites often have a
pisolitic structure. Ooid
Oolite Mindat -...
- iron oxides. In the case of sienna, the most
prevalent iron
oxides are
limonite (which in its
natural state has a
yellowish color), and goethite. In addition...
-
quartz crystals and
altered amphibole fibres that have
mostly turned into
limonite.
Tiger iron is an
altered rock
composed chiefly of tiger's eye, red jasper...
-
curve of a
limonite vug
Example of open
space in a vug
allowing the
formation of
crystallized minerals Apple green pyromorphite cluster on
limonite matrix...
- 72.4% Fe),
hematite (Fe 2O 3, 69.9% Fe),
goethite (FeO(OH), 62.9% Fe),
limonite (FeO(OH)·n(H2O), 55% Fe), or
siderite (FeCO3, 48.2% Fe). Ores containing...
- iron
minerals comprising ironstones can
consist either of oxides, i.e.
limonite, hematite, and magnetite; carbonates, i.e. siderite; silicates, i.e. chamosite;...
-
major ingredient of all the
ochres is iron(III) oxide-hydroxide,
known as
limonite,
which gives them a
yellow colour. A
range of
other minerals may also be...
-
iridescence of fire
agates is due to
inclusions of the iron
oxides goethite or
limonite. "Fire
Agate gemstone information". www.gemdat.org.
Retrieved 2025-02-12...
- the
fissures of
almost any kind of rock,
being most
commonly found with
limonite, sandstone, rhyolite, marl, and basalt. The name opal is
believed to be...
