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Calcite. Manganoan calcite (var.); Caledonite; Canasite; Cancrinite. Vishnevite; Carletonite; Carnallite; Cassiterite; Catapleiite; Cavansite; Celestite; Ceruleite ...
The coral referred to in the Bible is the precious coral (Corallium rubrum), the formation of which is a calcareous secretion of certain polyps resulting in a tree-like formation. Presently coral is found in the Mediterranean , the northern coast of Africa furnishing the dark red, Sardinia the yellow or salmon-colored, and the coast of Italy ...
The preferred habitats of introduced A. leptopus includes disturbed areas, forest edges, roadsides, coral cliffs, limestone soils, along banks, and in waste places. [6] It can tolerate full sun and partial shade, as well as poor soils. [3]: 175 In the wet season, this species can completely outcompete and smother native vines and understory ...
Precious coral, or red coral, is the common name given to a genus of marine corals, Corallium. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton , which is used for making jewelry .
The weak Van der Waals forces inside aragonite give an important contribution to both the crystallographic and elastic properties of this mineral. [27] The difference in stability between aragonite and calcite, as measured by the Gibbs free energy of formation , is small, and effects of grain size and impurities can be important.
Orbicular jasper from Madagascar. Orbicular jasper is a variety of jasper which contains variably-colored orbs or spherical inclusions or zones. In highly silicified rhyolite or tuff, quartz and feldspar crystallize in radial aggregates of needle-like crystals which provide the basis or seed for the orbicular structure seen in this kind of jasper. [1]
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The moon frequently appears as a pearl, and thus the dragon with the pearl is equal to the clouds with the moon. The pearl-moon relationship is expressed in the Chinese belief that at full moon pearls are solid balls and at new moon they are hollow (1968: 239, 382). Rabbinic Judaism includes a number of references to luminous gems. For example ...