|
|
|
|
|
|
|
|
|
Novaculite
| Англо-русский словарь по геологии |
A dense, even-textured, extremely finely grained, siliceous, sedimentary rock recrystallized from chert with microcrystalline quartz dominant over chalcedony (cryptocrystalline quartz). it is hard, white to grayish-black in color, translucent on thin edges, has a dull to waxy luster, and displays smooth conchoidal fracture when broken. novaculite occurs in the ouachita mountains of ar and ok and the marathon uplift of tx where it forms erosion resistant ridges. at the ouachita mountain type occurrence, novaculite formed by low-grade, thermal metamorphism of bedded chert. this rock serves widely as a whetstone or oilstone.
|
Новакулит, русский
|
Sedimentary, английский
Microcrystalline, английский
- Textural term for a crystalline rock with crystals that are too small to
- Microcrystalline is a 100% natural alternative to the plastic microbeads that are often used in exfoliators (and seep into our oceans and the fish they house). it`s biodegradable, made from renewable resources, safe for skin, and even edible�although we don`t recommend giving it a taste. it`s microcrystalline that makes our day maker microcrystal exfoliator so effective.
Chalcedony, английский
- A submicroscopic variety of fibrous quartz, generally translucent and containing variable amounts of opal; reacts with alkalies in portland cement. chalcidicum, chalcidic 1.a portico, or hall supported by columns, or any addition of like character connected with any ancient basilica;
- Халцедон
- Silica mineral which is the cryptocrystalline variety of quartz. has a
Cryptocrystalline, английский
- A rock texture that is too fine to be discernible with an optical microscope.
- Textural term for a rock consisting of crystals that are too small to be
Translucent, английский
- An object, material or vapor that transmits and diffuses light but not clear images. examples: frost gel and dense smoke. tip: use some rim light or back light.
- (1) pertaining to a medium which transmits light diffusely, so that objects viewed through it are not clearly distinguished. (2) transmitting light but causing sufficient diffusion to eliminate perception of distinct images.
- Descriptive of a material that transmits light but diffuses it sufficiently so that an image cannot be seen through the material clearly.
- Просвечивающий
- Светопрозрачный; полупрозрачный; просвечивающий
Conchoidal, английский
A term used originally in descriptive mineralogy to describe the
Occurrence, английский
- In insurance terminology, an accident or a continuous exposure to conditions which result in injury or damage, provided the injury or damage is neither expected nor intended. ocher, ochre a naturally occurring yellowbrown hydrated iron oxide; used as a pigment in paint and a filler in linoleum. oct on drawings, abbr. for “octagon.”
- Something that takes place neuralgia is a common occurrence after shingles. ocd ocd abbr obsessive-compulsive disorder
Metamorphism, английский
- The process that causes mineralogical, chemical, or structural changes in solid rocks by exposing them to new pressure and temperature conditions by bur- ial within the crust or mantle. metasomatic: formed by metasomatism, a geologic process that produces new minerals in an existing rock by replace- ment.
- Alteration of mineralogy, texture and structure of the rock due to high
|
Новакулит, русский
Новакит, русский
|
|
|
|
|
|
|
