Ad
related to: tabular crystals
Search results
Results From The WOW.Com Content Network
Crystals are deep red in color and usually very well-formed. Wulfenite was approved as the official state mineral of Arizona in 2017. [5] The Los Lamentos locality in Mexico produced very thick tabular orange crystals. Another locality is Mount Peca in Slovenia. The crystals are yellow, often with well-developed pyramids and bipyramids.
In mineralogy, crystal habit is the characteristic external shape of an individual crystal or aggregate of crystals. The habit of a crystal is dependent on its crystallographic form and growth conditions, which generally creates irregularities due to limited space in the crystallizing medium (commonly in rocks ).
Abernathyite is a transparent, yellow mineral that occurs as tabular crystals up to 3 millimeters (0.12 in). The mineral has a single perfect cleavage on . Abernathyite fluoresces yellow-green in longwave and shortwave ultraviolet. [4] Because of its uranium content, the mineral is radioactive. [5]
Diaboleite crystal from a slag occurrence in the Laurium District, Attica, Greece (size: less than 1 mm) Diaboleite is deep blue in color and pale blue in transmitted light. The mineral occurs as tabular crystals up to 2 cm (0.8 in) in size, as subparallel aggregates, or it has massive habit.
They occur as aggregates of tabular crystals, or thick tabular canoe-shaped crystals. [1] Whiteite from Rapid Creek in the Yukon , Canada, is often associated with deep blue lazulite crystals (33 out of 49 photos on Mindat.org ).
Autunite (hydrated calcium uranyl phosphate), with formula Ca(UO 2) 2 (PO 4) 2 ·10–12H 2 O, is a yellow-greenish fluorescent phosphate mineral with a hardness of 2– 2 + 1 ⁄ 2. [4] [5] Autunite crystallizes in the orthorhombic system and often occurs as tabular square crystals, commonly in small crusts or in fan-like masses.
Eskebornite is a selenide mineral with the formula Cu Fe Se 2. [2] [3] It crystallizes in the tetragonal system and it has a brassy colour.Eskebornite is sometimes found as thick tabular crystals, but is more often found intergrown with other selenides. [4]
The following table gives the crystalline structure of the most thermodynamically stable form(s) for elements that are solid at standard temperature and pressure.Each element is shaded by a color representing its respective Bravais lattice, except that all orthorhombic lattices are grouped together.