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Chalcedony (/ k æ l ˈ s ɛ d ə n i / kal-SED-ə-nee or / ˈ k æ l s ə ˌ d oʊ n i / KAL-sə-doh-nee) [2] is a cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite. [3]
It has gained the Royal Horticultural Society's Award of Garden Merit. [ 16 ] [ 17 ] Numerous cultivars have been selected, varying in flower colour from bright red to orange-red, pink or white. It grows best in partial to full sun and in any good well-drained soil, if provided with a constant moisture supply.
Chalcedon was an episcopal see at an early date and several Christian martyrs are associated with Chalcedon: The virgin St. Euphemia and her companions in the early 4th century; the cathedral of Chalcedon was consecrated to her. St. Sabel the Persian and his companions. It was the site of various ecclesiastical councils.
Chrome chalcedony is a green variety of the mineral chalcedony, colored by small quantities of chromium. [4] Its name is derived from Mutorashanga, a small ferrochrome mining town in Zimbabwe where the mineral was discovered in the 1950s.
An archaeological find in Mexico revealed a stone slab with 123 hieroglyphic symbols that, in part, describe the founding of a town in 569 AD. The slab was located on the floor of what was once a ...
The Greek and Latin names are taken from the river Achates (the modern Dirillo), in Sicily, where this stone was first found (Theophrastus, "De lapid.", 38; Pliny, "Hist. nat.", XXXVII, liv). The stone belongs to the silex family (chalcedony species) and is formed by deposits of siliceous beds in hollows of rocks. This mode of formation results ...
The garden sculptures have found a great history in the major civilizations of the world. [1] Among the major themes, human figures and animals were the inspiration. However, in certain cases, for example, in China the monsters and animals were assumed to be imaginary.
Even though Chalcedon reaffirmed the Third Council's condemnation of Nestorius, the Non-Chalcedonians always suspected that the Chalcedonian Definition tended towards Nestorianism. This was in part because of the restoration of a number of bishops deposed at the Second Council of Ephesus, bishops who had previously indicated what appeared to be ...