[DOC] [TLE] Black sand - Wikipedia [PAR] Black sand is sand that is black in color. One type of black sand is a heavy, 
glossy, partly magnetic mixture of usually fine sands, found as part of a placer 
deposit... [DOC] [TLE] What is black sand - Sandatlas [PAR] Black sand beaches are black because many volcanic minerals and rocks are 
dark-colored. ... beach. Basalt is the most common source rock of black sand. ... 
Black volcanic sands may contain many non-black grains like green olivine 
crystals,... [DOC] [TLE] Beach and Shoreline Sands From Around the World - UGA Geology [PAR] The word "sand" is used by most of us to mean the fine, somewhat gritty, stuff ... 
refers to the origin of the grains as clasts or fragments of silicate rocks. ... They 
thus typically consist of silicate minerals, such as quartz (SiO2), ... and the 
Marianas Islands in the western Pacific), mafic volcanic rocks are the dominant 
bedrock. [DOC] [TLE] Sand Grains from Around the World! - Geology.com [PAR] However, sand is much more diverse - even beyond the pink sand beaches ... 
This photo is a view of black concentrate sand with abundant grains of gold ... It 
contains a diversity of grain types which include: quartz, chert, volcanic rock, ... 
The San Andreas Fault: A feature that separates the Pacific and North American 
Plates... [DOC] [TLE] We've got a lot of black sand here ... so where's our gold? - Opinion - [PAR] Mar 6, 2012 ... Black sand beaches around the world often have gold deposits. ... which are 
common on Hawaiian beaches, or eroded out of hard rock by water and ... quartz 
and feldspar, which are the most common minerals in our beach sands. ... The 
Pacific Northwest Coast, comes a description of beach sand grains... [DOC] [TLE] Hawaii: Geology, Plate Tectonics/Hot Spot - MarineBio.net [PAR] Most islands are found at tectonic plate boundaries either from spreading centers 
(like ... is right in the middle of one of the largest crustal plates on Earth - the 
Pacific Plate. .... Lava flowing into the ocean and a new black sand beach from 
East Rift Zone, Kilauea ... Magma turns to lava as molten rock comes to the 
surface. [DOC] [TLE] Basics--Rocks and Minerals - Commons [PAR] Jul 16, 2013 ... Igneous rock textures; Volcanic rocks; Plutonic rocks; Igneous rock compositions 
.... One or two of the rocks in your Pacific Northwest Geology Rocks set may 
consist of just ... In some of them you will see different grains with black colors, 
white .... and eroded rocks or minerals, for example sand on a beach. [DOC] [TLE] Answers to Frequently Asked Questions about Hawaii [PAR] Molokai - The Most Hawaiian Island because per capita it has the most people of 
Hawaiian ... This also includes black sand, which is pulverized lava rock. ... 
beach is used only for beaches with a high concentration of grains of black 
volcanic glass. .... But Hawaii actually has the coldest waters in the Indo-Pacific 
region. [DOC] [TLE] Rocks - Roger Russell [PAR] Rocks. By Roger Russell. Here are some of the rocks and fossils I collected over 
... Slate. Flint. Limestone. More Limestone Sand. Beach Glass. Beach Pebbles ... 
of this material in a primordial ball of flame, it consists of almost a pure silicate. .... 
Gold nuggets weighing a few grains to many grams, shown at the right, can be... [DOC] [TLE] beach - National Geographic Society [PAR] Dec 7, 2012 ... Most beach materials are the products of weathering and erosion. ... Huge 
boulders can be worn town to tiny grains of sand. ... They are covered with flat 
pebbles called shingles or rounded rocks known as cobbles. ... Some volcanic 
beaches, such as those on the South Pacific island of Guam, are green. [DOC] [TLE] GC2K576 Sand, Beach, Dunes And LSD (Earthcache) in Wisconsin ... [PAR] Dec 22, 2010 ... The most common type of shoreline in the Great Lakes area is the sand beach. 
Sand consists of rocks, crystals

Question: The black sand beaches of the Pacific consist of grains of this most abundant lava rock
Answer: basalt