Greasy luster

Speck-, fatty, lardaceous. amyloid, speck-ahnlich, -artlg, a. fatty, lardaceous. Speck-glanz, m. greasy luster, -haut, /. (Physiol.) buffy coat. 

Properties A natural hydrated double chloride of potassium and magnesium, white, brownish, and reddish streak white shining, greasy luster strongly phosphorescent bitter taste. Deliquescent, d 1.62, Mohs hardness 1. 

Properties Smoky-gray, brownish, blackish or dull yellowish in color waxy to greasy luster. Mohs hardness 6.5-7, d 2.60-2.65. More easily soluble in hot caustic alkali than is crystallized quartz. 

Properties Colorless, white, or yellowish vitreous to greasy luster. Mohs hardness 5.5-6, d 2.55-2.65. 

Properties White, green, gray, brown color pearly to greasy luster, good micaceous cleavage. D 2.8-2.9, Mohs hardness 1-2. Similar to talc. 

Properties White, apple-green, gray powder pearly or greasy luster, greasy feel. Mohs hardness 1-1.5 (may be harder when impure), high resistance to acids, alkalies and heat d 2.7-2.8. 

InSe Black, dull greasy luster, easily ground (loamy). M.p. 660°C d 5.55. 

Properties Colorless, wh., green, gray, brown pearly to greasy luster dens. 2.8-2.9 hardness (Mohs) 1-2... 

Properties Wh., apple green, gray or gray fine powd., pearly or greasy luster, greasy feel odorless, tasteless insol. in water, cold acids or in alkalis dens. 2.7-2.8 bulking valueO.044 gal/lb oil absorp. 30-55 GE brightness 75-94 ref. index 1.59-1.60 hardness (Mohs) 1.0-1.5... 

AMBLYGONITE. A rather rare compound of fluorine, lithium, aluminum. and phosphorus. (Li, Na)AlPO. (F. OH). It crystallizes in the tri-clinic system hardness, 5-5.6 sp gr 3.08 luster, vitreous to greasy or pearly color, white to greenish, bluish, a yellowish or grayish streak white translucent to subtranspaient. 

DANBIIRITE. The mineral danburile, CaBjSijO. calcium-boron silicate, crystallizes in the orthorhombic system in prismatic forms somewhat resembling the mineral topaz. Its fracture is subconchoidal brittle hardness, 7 specific gravity. 2.97-3.02 color, colorless, yellowish-white, yellow, dark wine yellow and brownish-yellow luster, vitreous to greasy translucent to transparent. It is found at Danbury. Connecticut, from whence its name was derived. Saint Lawrence County, New York. Switzerland, Japan, and Madagascar. 

QUARTZ, [CAS 14808-60-7]. The mineral quartz, oxide of the nonmctallic element silicon, is the commonest of minerals, and appears in a greater number of forms than any other. Its formula is SiC>2. Quartz commonly occurs in prismatic hexagonal crystals terminated by a pyramid. This pyramid is due to the equal development of two rhombohedrons, and may be observed in cases where one rhombohedron predominates. Cleavage is not observed the fracture is typically conchoidal, hardness is 7 specific gravity, 2.65 luster, vitreous to greasy or dull colorless to white, pink, purple, yellow, blue, green, smoky brown to nearly black transparent to opaque. 

The luster of a mineral is the appearance of its surface when light is reflected off of it. Minerals can have metallic or nonmetallic luster. Minerals with metallic luster look shiny like a metal. Nonmetallic minerals can have various appearances, such as vitreous (glassy), greasy, silky, brilliant (like a diamond), or pearly. 

Properties Black, brown, yellow to colorless streak white, luster submetallic to vitreous to greasy. D5.5-6.0, mp 2500-2950C. Highly resistant to... 

Properties Bluish-gray color, gray-black streak, metallic luster. One perfect cleavage, greasy feel. Mohs hardness 1-1.5, d 4.6—4.8. Similar in appearance to graphite. Soluble in sulfuric and concentrated nitric acids. 

PHYSICAL PROPERTIES white to grayish white, very fine crystalline powder odorless insoluble in water, cold acids or in alkalies luster pearly or greasy adheres readily to the skin may be harder when impure MP (900-1000°C, 1652-1832°F) BP (unknown) DN (2.7-2.S g/cm ) SG (2.70-2.80) VP (0 mmHg approximately) MOHS HARDNESS (1-1.5). 

Invert soaps do not appear in nature but are important synkinons in the preparation of artificial membrane structures. The most common application of such monolayers is a cosmetic one. For centuries people smeared fats on their hair to make it shiny, but the hair then stuck together. Invert soaps adsorb strongly to hair proteins and provide them with the elegant luster of a monolayer and the fullness of non-greasy and non-polar hair. Hair with a nonsticky hydrocarbon monolayer on the surface looks irresistibly shiny, fluffy, and clean. Combinations with polymers, such as silicones, proteins, and poly(vinyl pyrrolidone) then help to build even more body in leave-in conditioning products. 

---