Olgite is a rare blue-green colored phosphate mineral series that forms microscopic prismatic crystals that are trigonal in structure. Its chemical formula is Na(Sr,Ba)PO
4. [1]
Olgite was discredited as a mineral name in 2008 by the International Mineralogical Association and is now the series name for bario-olgite and strontio-olgite (hypothetical mineral). [2] [3] The substance was named after Russian mineralogist Olga Anisimovne-Vorobiova (1902–1974).
In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.
Hornblende is a complex inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole.
Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more properly known as the plagioclase feldspar series. This was first shown by the German mineralogist Johann Friedrich Christian Hessel (1796–1872) in 1826. The series ranges from albite to anorthite endmembers (with respective compositions NaAlSi3O8 to CaAl2Si2O8), where sodium and calcium atoms can substitute for each other in the mineral's crystal lattice structure. Plagioclase in hand samples is often identified by its polysynthetic crystal twinning or 'record-groove' effect.
Amphibole is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO
4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Amphiboles can be green, black, colorless, white, yellow, blue, or brown. The International Mineralogical Association currently classifies amphiboles as a mineral supergroup, within which are two groups and several subgroups.
The pyroxenes (commonly abbreviated to Px) are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the general formula XY(Si,Al)2O6, where X represents calcium (Ca), sodium (Na), iron (Fe II) or magnesium (Mg) and more rarely zinc, manganese or lithium, and Y represents ions of smaller size, such as chromium (Cr), aluminium (Al), iron (Fe III), magnesium (Mg), cobalt (Co), manganese (Mn), scandium (Sc), titanium (Ti), vanadium (V) or even iron (Fe II). Although aluminium substitutes extensively for silicon in silicates such as feldspars and amphiboles, the substitution occurs only to a limited extent in most pyroxenes. They share a common structure consisting of single chains of silica tetrahedra. Pyroxenes that crystallize in the monoclinic system are known as clinopyroxenes and those that crystallize in the orthorhombic system are known as orthopyroxenes.
The Kelabit are an indigenous Dayak people of the Sarawak/North Kalimantan highlands of Borneo with a minority in the neighbouring state of Brunei. They have close ties to the Lun Bawang. The elevation there is slightly over 1,200 meters. In the past, because there were few roads and because the area was largely inaccessible by river because of rapids, the highlands and the Kelabit were relatively untouched by modern western influences. Now, however, there is a relatively permanent road route on which it is possible to reach Bario by car from Miri. The road is marked but driving without a local guide is not advisable, as it takes over 11 hours of driving to reach Bario from Miri through many logging trail junctions and river crossings.
Phosphate minerals contain the tetrahedrally coordinated phosphate (PO43−) anion along sometimes with arsenate (AsO43−) and vanadate (VO43−) substitutions, and chloride (Cl−), fluoride (F−), and hydroxide (OH−) anions that also fit into the crystal structure.
The tailless fruit bat is a species of fruit bat in the family Pteropodidae.
Batu Lawi is a twin-peaked mountain in the Kelabit Highlands of Sarawak, Malaysia (Borneo) that has played important roles in both ancient mythology and modern history. The taller 'male' peak is 2046 metres above sea level, while the female summit is at 1850 metres. It is one of the highest mountains in the state of Sarawak.
Ba'kelalan is a group of nine villages at Maligan Highlands of Limbang Division, Sarawak, Malaysia about 3,000 feet (910 m) above sea level and 4 km from the border with Indonesian Kalimantan and 150 km from the nearest town of Lawas. There are nine villages in Ba'kelalan. The villagers here belong to the Lun Bawang tribe.
Bario Airport is an airport in Bario, a town in the state of Sarawak in Malaysia.
Kalophrynus eok is a species of frog in the family Microhylidae. It is endemic to Borneo and currently only known from its type locality in the Kelabit Highlands of Sarawak, Malaysia, but presumably, it also occurs in the adjacent Kalimantan, Indonesia. The specific name eok is Kelabit for "tiny" and refers to the small size of this species. Common names eok sticky frog and small Bario sticky frog have been coined for it.
Bario is a community of 13 to 16 villages located on the Kelabit Highlands in Miri Division, Sarawak, Malaysia, lying at an altitude of 1000 m (3280 ft) above sea level. It is located close to the Sarawak-Kalimantan border, 178 km to the east of Miri. It is the main settlement for the indigenous Kelabit tribe. There are regular flights between the Bario, Miri and Marudi.
Navarrete is a municipality in northwestern Dominican Republic, created in 1961. It lies approximately 25 kilometres (16 mi) from Santiago de los Caballeros, Dominican Republic's second largest city. The administrative centre is in the town of Villa Bisonó.
Franco E. Bario is an American television line producer.
Tezoatlán de Segura y Luna is a town and municipality in Oaxaca in south-western Mexico. It is part of the Huajuapan District in the north of the Mixteca Region.
Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava.
iBario is an internet marketing conglomerate based in Israel.
Mulu is a state constituency in Sarawak, Malaysia, that has been represented in the Sarawak State Legislative Assembly since 2016.