[DOC] [TLE] Slate: Metamorphic Rock - Pictures, Definition & More - Geology.com [PAR] Slate is a fine-grained, foliated metamorphic rock that is created by the ... original 
clay minerals in shale alter to micas with increasing levels of heat and pressure. 
... Slaty Cleavage ... Historically slate has been used for chalkboards, student 
writing slates, ... Fluorescent Minerals and rocks glow with spectacular colors 
under... [DOC] [TLE] slate | geology | Britannica.com [PAR] Slate was formed under low-grade metamorphic conditionsi.e., under relatively 
low ... dust, usually in the form of a sedimentary rock (e.g., a mudstone or shale). 
... may be indicated by alternating bands, sometimes seen on the cleavage faces. 
... On this account, slates occur chiefly among older rocks, although some occur... [DOC] [TLE] Rock Key [PAR] They are everywhere on earth, but often buried under soil. Rocks are ... 
Metamorphic Rock is formed by great heat, or pressure, or both. The pressure 
can .... Fine Grained: the individual grains can not be seen without a magnifier (or 
microscope). ... Ribbon like Layers, Mica like Layers, Particle Layers, Thin 
Cleavage Layers. [DOC] [TLE] Metamorphic Rocks Lesson #14 | Volcano World | Oregon State ... [PAR] Rocks are formed on Earth as igneous, sedimentary, or metamorphic rocks. ... 
Metamorphic rocks form from heat and pressure changing the original or parent 
... layers of sediments being buried deeper and deeper under the surface of the 
Earth. ... Contact metamorphism produces non-foliated (rocks without any 
cleavage )... [DOC] [TLE] Free Flashcards about GENERAL SCIENCE - StudyStack [PAR] THE LUSTER OF THIS ROCK FORMED FROM SHALE UNDER PRESSURE IS 
SEEN IN OLDER BLACKBOARDS, SLATE. FROM THE GREEK FOR "ALL... [DOC] [TLE] Vermont State Rocks and Rock Kit | Department of Environmental ... [PAR] The collection below includes both common and unusual rocks found in ... of 
minerals) will crystallize under different temperature and pressure conditions. ... 
The Cheshire Formation is approximately 570 million years old. ... Although shale 
may occur in a variety of colors, shale in Vermont is usually dark grey or black. [DOC] [TLE] Slate - Wikipedia [PAR] Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an 
original shale-type sedimentary rock composed of clay ... Slate is frequently grey 
in color, especially when seen, en masse, covering roofs. However ... Slate is not 
to be confused with shale, from which it may be formed, or schist. The word... [DOC] [TLE] Metamorphic Rocks - Geology Cafe [PAR] Feb 27, 2015 ... Metamorphism and Formation of Metamorphic Rocks .... Slate is used for roof 
shingles and black boards. Slate displays "slaty" rock cleavage (see below). ... 
Heat and pressure are the main agents of metamorphic change, but ... 
Metamorphic rocks are mostly exposed in mountain ranges and in old, stable... [DOC] [TLE] The Slate Family of Rocks - varieties, uses and mineral make up [PAR] Their characteristic slaty cleavage may or may not be parallel to the bedding 
planes of the original shales  the cleavage is formed perpendicular to the 
direction... [DOC] [TLE] Glossary of geologic terms | Department of Geological ... [PAR] arkose A sedimentary rock formed by the cementation of sand-sized grains of ... 
is under pressure that raises the water above the point that the well ..... or open 
fracture in glacier ice. ..... Most commonly occur in limestone, and less often in 
shale. geologic column .... inclusion (xenolith) A fragment of older rock caught up 
in an... [DOC] [TLE] contents part i what is a rock?... a mineral? - State of Michigan [PAR] of rocks and minerals found in Michigan as well as a key to their identification. ..... 
which is dark silver gray or black, feels smooth under .... 2The rare and valuable 
old glass of museums was colored by the .... pavement by air pressure  a mud 
jack. ... color, luster, form. .... shales to slates such as are used for blackboards in. [DOC] [TLE] ROCKS ... and how to identify them - SAHRA [PAR] three rock types are:

Question: The luster of this rock formed from shale under pressure is seen in older blackboards
Answer: Slate