- sediment,
before the rest of the
sediment is
hardened into rock. This
concretionary cement often makes the
concretion harder and more
resistant to weathering...
-
aggregate with a
bulbed surface.
Nodule is also used for
widely scattered concretionary lumps of manganese, cobalt, iron, and
nickel found on the
floors of...
- πίσον (píson) 'pea') is a
sedimentary rock made of pisoids,
which are
concretionary grains –
typically of
calcium carbonate which resemble ooids, but are...
-
cavities in
volcanic tuff. It is a globular, botryoidal, or
stalactic concretionary form of opal. The
mineraloid has a
pearly lustre and
forms botryoidal...
-
white - may have
shades of
brownish colors Crystal habit Botryoidal,
concretionary, druse, globular, granular, m****ive, rhombohedral, scalenohedral, stalactitic...
- Ohio, U.S.,
showing grains mainly composed of
crinoid fragments A
concretionary nodular (septarian)
limestone at Jin****an
Coastal National Geopark...
-
crystallizes in the
hexagonal system. It
forms as
brown rounded to
concretionary m****es.
Feroxyhyte is opaque, magnetic, has a
yellow streak, and has...
-
fibrous or
microcrystalline structure, and
limonite often occurs in
concretionary forms or in
compact and
earthy m****es;
sometimes mammillary, botryoidal...
- sand, and
silty sand.
These sediments are
often cemented into
either concretionary m****es or beds by calcrete.
Ridges typically consist of
deeply weathered...
-
habit Pyramidic, prismatic,
radially fibrous botryoidal crusts and
concretionary m****es; co**** to fine granular, m****ive
Twinning Very
common on {011}...
