Basanite (/ˈbæs.əˌnaɪt/) is an igneous, volcanic (extrusive) rock with aphanitic to porphyritic texture. It is composed mostly of feldspathoids, pyroxenes...

border with Kazakhstan, is noted for its colossal, open-cast copper mine.) Basanite is a deep velvety-black variety of amorphous quartz, of a slightly tougher...

is the most common rock on Mount Takahe, phonolite being less common. Basanite, hawaiite, and mugearite are uncommon, but the occurrence of benmoreite...

The absence of olivine distinguishes them from the otherwise similar basanite. It's parameters are defined in the QAPF diagram. Occurrences include leucite...

and may contain also biotite, quartz, and orthoclase. Andesite Basalt Basanite Dacite Felsite Phonolite Rhyolite Trachyte Le Maitre, R. W., ed. (1989)...

increasingly alkaline in composition, and include the 25-26 Ma Cieneguilla basanite. This is a small-volume extrusive unit exposed around the village of La...

Small volcanic bomb of (black) basanite with (green) dunite...

basaltes, a misspelling of Latin basanites "very hard stone", which was imported from Ancient Greek βασανίτης (basanites), from βάσανος (basanos, "touchstone")...

intact in modern time. Typical materials known from this site are: Basalt Basanite Metagraywacke and metaconglomerate Qurna is located near Thebes. It was...

000 years ago and erupted picrobasalts, trachybasalts, ankaramites, and basanites. They reach as far as Lake Chala and Taveta in the southeast and the Lengurumani...

and is classified as extinct. The volcanic rocks range from ankaramitic basanite through tephrite to phonolite and some have ultra-potassic compositions...

undifferentiated and nonviscous basanite lavas that form the low broad platform shield of Erebus. Slightly younger basanite and phonotephrite lavas crop...

rock type Shoshonite – Potassium-rich variety of basaltic trachyandesite Basanite – Type of volcanic rock Blairmorite – Rare porphyritic volcanic rock Boninite –...

located in the eastern part of the volcanic massif of the Cantal. Formed of basanite, it is a remnant of a basaltic lake formed of solidified lava and is the...

ilmenite and analcime. Theralite is the intrusive equivalent of nepheline basanite, a foidal basalt with essential calic plagioclase and essential olivine...

clinopyroxene (augite) and calcic plagioclase. Basalt, alkali basalt, basanite, tephritic nephelinite, and nephelinite differ partly in the relative proportions...

Nepheline-porphyry Essexite and Theralite Ijolite and Missourite Effusive type or Lavas Phonolite, Leucitophyre Tephrite and Basanite Nepheline-basalt, Leucite-basalt...

Sculpture of Livia in Egyptian basanite, c. 31 BC, Louvre, Paris...

the Triassic rocks are overlain and intruded by volcanic rock (basalts, basanites, phonolites and trachytes) of the Tertiary. The eastern third of Franconia...

eruptive centres, are known, and these are mainly of small volume alkaline basanite eruptives. The Dunedin volcanic group shows continued evidence of a magma...

calculated for the rock based on its chemical composition. For example, basanite is distinguished from tephrite by having a high normative olivine content...

that extend tens of kilometers and stack up to 300 m (1,000 ft) thick. Basanite and andesite are also found in the volcanic layer. More recently in geologic...

hotels are now rebuilt and open for travelers now. Pico do Fogo consists of basanite, tephrite, phonotephrite, clinopyroxene, amphibole, magnetite, olivine...

rocks are of variable, though mainly silica-undersaturated, character with basanite, nephelinite and phonolite among the lava types found. The main island...

Mravenčák (left) and Černý vrch, two tephrite-basanite kuppen on the northern edge of the Doupov Mountains opposite Klášterec nad Ohří...

hotspots. Their silica content can range from ultramafic (nephelinites, basanites and tephrites) to felsic (trachytes). They are more likely to be generated...

typical of oceanic islands. The volcanic rocks include alkali basalts, basanites, phonolites, trachytes, nephelinites, trachyandesites, tephrites and rhyolites...

consisting mainly of nephelinites or larnite-normative nephelinites and basanites along with lesser olivine melilite nephelinites, phonolites and tholeiitic...

This basanite statue of Agrippina the Younger as a priestess of the divine Claudius, 54–59 AD, was discovered on the Caelian Hill in 1885....

hotspots. Their silica content can range from ultramafic (nephelinites, basanites and tephrites) to felsic (trachytes). They are more likely to be generated...