stalactitic

Amazingly soon he came to a deep nether passage barred by solid stalactitic columns.

Azurite specimens are typically massive to nodular, and are often stalactitic in form.

It can also be stalactitic, reniform with a concentrically radiating structure, or have massive habit.

It generally occurs in stalactitic, reniform, or botryoidal shapes, of a white to gray, green, or brown color.

It crystallizes in the orthorhombic system typically forming as stalactitic masses exhibiting good cleavage.

On removing the debris, a stalactitic floor, about six inches in thickness, was found, under which were discovered the bones of fowls, sheep and pigs.

It crystallizes in the monoclinic system and typically occurs as colorless to white prismatic crystals and stalactitic masses.

It crystallizes in the orthorhombic system and forms acicular crystals, stalactitic forms and massive clumps.

His lips were parted over stalactitic fangs in a hateful snarl; and he cried out in a voice like the rumbling of articulate thunder: 'Ho!

Psilomelane is amorphous and occurs as botryoidal and stalactitic masses with a smooth shining surface and submetallic lustre.

Catamarca, Argentina has an old Incan silver mine that has produced fine stalactitic examples of rhodochrosite that are unique and very attractive.

It commonly occurs as botryoidal, kidney shaped, stalactitic or globular crusts or masses, frequently with a concentric structure; rare crystals have a hexagonal outline.

It occurs as small prismatic or pyramidal crystals, usually forming drusy crusts and stalactitic aggregates; also as fibrous encrusting masses with a mammillary surface.

Aragonite may be columnar or fibrous, occasionally in branching stalactitic forms called flos-ferri ("flowers of iron") from their association with the ores at the Carinthian iron mines.

They assumed the beauty would be in the stalactitic formations, that it would be another cave like the one named Pretty Hollow that was near the Ninth Cave.

Ever and again crystals in the walls of the tunnel scintillated like gems, ever and again the tunnel expanded into a stalactitic cavern, or gave off branches that vanished into darkness.

An excavation of about 10 feet in depth had been made in the floor of the cave, in which was found a formation being of river sand and pebbles, situated between two stalactitic floors.

At Farragudo in the Algarve, Portugal, a stalactitic mass of todorokite was found in a small collection of secondary manganese minerals, chiefly cryptomelane (K(Mn,Mn)O).

Prehnite crystallizes in the orthorhombic crystal system, and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite.

Hence some stalactites have their tips under water long enough to allow tassels of crystals to grow on them, which, in a drier season, are again coated over with stalactitic matter; and thus singular distortions are occasioned.

Hemimorphite most commonly forms crystalline crusts and layers, also massive, granular, rounded and reniform aggregates, concentrically striated, or finely needle-shaped, fibrous or stalactitic, and rarely fan-shaped clusters of crystals.

Individual minerals in limonite may form crystals, but limonite does not, although specimens may show a fibrous or microcrystalline structure, and limonite often occurs in concretionary forms or in compact and earthy masses; sometimes mammillary, botryoidal, reniform or stalactitic.