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Struvite crystals found in a urinalysis. Crystalluria refers to crystals found in the urine when performing a urine test. Crystalluria is considered often as a benign condition and as one of the side effects of sulfonamides and penicillins. The main reason for the identification of urinary crystals is to detect the presence of the relatively ...
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.
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The most common type of cast, hyaline casts are solidified Tamm–Horsfall mucoprotein secreted from the tubular epithelial cells of individual nephrons. Low urine flow, concentrated urine, or an acidic environment can contribute to the formation of hyaline casts, and as such, they may be seen in normal individuals in dehydration or vigorous exercise.
Cleusonite is seen as a black opaque cm-sized tabular crystal with a bright sub-metallic luster. It does not have any cleavage and has a density of about 4.74(4) g/cm3. The calculated density may vary from 5.02(6) (for untreated crystals) to 5.27(5) (heat-treated crystals); the variations are caused by the cell swelling due to the metamictization .
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]
It forms as white, green to reddish tabular monoclinic tectosilicate crystals with a Mohs hardness of 3.5 to 4 and a specific gravity of 2.1 to 2.2. It commonly occurs as a devitrification product of volcanic glass shards in tuff and as vesicle fillings in basalts, andesites and rhyolites.
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]