Magnesium oxide doesn't exist in gaseous form. It occurs naturally in mineral form - as periclase. In refined form - it is a white solid
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MgO is the chemical formula for magnesium oxide, a white solid mineral that occurs naturally as periclase. It is commonly used in industry as a refractory material and in medicine as an antacid. Magnesium oxide is also a component of some cements and building materials.
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Magnesium oxide has a chemical formula of MgO, which means it is composed of one magnesium atom bonded to one oxygen atom. It is a white solid that occurs in nature as the mineral periclase.
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Magnesium and oxygen combine to form magnesium oxide (MgO). Magnesium oxide is a white solid that occurs naturally as the mineral periclase. It is commonly used in various industrial applications, including as a refractory material and in the production of ceramics.
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 18 words with the pattern P-R----S-. That is, nine letter words with 1st letter P and 3rd letter R and 8th letter S. In alphabetical order, they are:
parablast
parcheesi
parsonish
periblast
periclase
periplasm
periplast
perkiness
personise
phrasiest
piroplasm
porkiness
porteress
porthouse
portliest
purpliest
pursiness
pyroclast
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 25 words with the pattern P--I-L---. That is, nine letter words with 1st letter P and 4th letter I and 6th letter L. In alphabetical order, they are:
palillogy
panislams
papillary
papillate
papilloma
papillons
papillose
papillote
papillous
papillule
pavillons
penillion
periblast
periblems
periclase
pericline
perilling
periplasm
periplast
petillant
petiolate
petiolule
pupillage
pupillary
pupillate
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 24 words with the pattern -ER-C----. That is, nine letter words with 2nd letter E and 3rd letter R and 5th letter C. In alphabetical order, they are:
ceraceous
cerecloth
feracious
ferocious
mericarps
merocrine
merycisms
pericarps
periclase
pericline
pericones
pericopae
pericopal
pericopes
pericopic
pericycle
reracking
rerecords
sericeous
sericites
sericitic
veracious
xerically
xerochasy
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Magnesium oxide, or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium. It has an empirical formula of MgO and consists of a lattice of Mg²⺠ions and O²⻠ions held together by ionic bonding
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 39 words with the pattern --RI-L---. That is, nine letter words with 3rd letter R and 4th letter I and 6th letter L. In alphabetical order, they are:
aerialist
aeriality
agriology
carillons
curialism
curialist
ebrillade
gorillian
gorilline
gorilloid
hariolate
kyrielles
marialite
meritless
periblast
periblems
periclase
pericline
perilling
periplasm
periplast
serialise
serialism
serialist
seriality
serialize
shrillest
shrillier
shrilling
stridling
stripling
thrillant
thrillers
thrillier
thrilling
variolate
variolite
varioloid
variolous
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 80 words with the pattern -ER---A--. That is, nine letter words with 2nd letter E and 3rd letter R and 7th letter A. In alphabetical order, they are:
aerobrake
aerograms
aerograph
aerophagy
aeroplane
aerospace
aerostats
aerotrain
berascals
bergamask
berghaans
bergomask
berimbaus
berrigans
cerebrals
cerebrate
cerograph
ceruleans
cervelats
fernshaws
fertigate
geranials
germinant
germinate
germplasm
hercogamy
hereaways
herkogamy
hermitage
hernshaws
jeremiads
jeroboams
jerricans
jerrycans
kerygmata
mercenary
mercurate
meridians
perborate
percolate
perennate
perforans
perforant
perforate
perfusate
periblast
periclase
periodate
periplasm
periplast
peritrack
permutate
personage
personals
personate
pertusate
pervicacy
reradiate
rerebrace
rerelease
rerepeats
serigraph
serrulate
servquals
terebrant
terebrate
termagant
terminals
terminate
termitary
terramara
terramare
verandaed
verandahs
verberate
verminate
verticals
xeriscape
xerochasy
xerophagy
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 80 words with the pattern P-R-----E. That is, nine letter words with 1st letter P and 3rd letter R and 9th letter E. In alphabetical order, they are:
parabrake
parachute
paraclete
paracrine
paraffine
paraglide
paragogue
parapente
pararhyme
parasceve
parbuckle
pardalote
parentage
parfleche
pargasite
pargyline
parhypate
parochine
parolable
parricide
parsonage
partitive
partridge
parvoline
perborate
percaline
perceable
perchance
percolate
peregrine
perennate
perforate
perfusate
perfusive
periclase
pericline
pericopae
pericycle
peridrome
periodate
periodide
periscope
peristome
peristyle
permeable
permeance
permittee
permutate
persecute
perseline
persevere
persienne
personage
personate
personise
personize
pertusate
perusable
pervasive
pirouette
porbeagle
porcupine
poroscope
porporate
portatile
portative
porterage
porthouse
portreeve
porwiggle
purgative
purgeable
purposive
purselike
pursuable
pursuance
purulence
pyreneite
pyrophone
pyroscope
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1. Chemical component and mineral composition
The chemical component of magnesia brick and varies with the raw materials composition. General magnesium oxide is 55% ~ 60%, the amount of chromium trioxide is about 10%, followed by ferric oxide and a small amount of oxide such as two aluminum dioxide aluminum, silica, calcium oxide and other impurities.
The mineral composition of magnesia brick is mainly magnesium chromium spinel acid magnesium ferrite.
2. Because periclase content of magnesia brick is less than magnesia brick, magnesia chrome spinel and magnesium ferrite content is much , and their melting point of eutectic compounds is lower, so the refractoriness of magnesia chrome brick magnesia brick is low, usually only 1850 ~ 1960 ℃.
3. Refractoriness under load
Periclase crystals of magnesia brick and magnesia chrome spinel is easy to form a mesh skeleton, by filling in the Internet clearance of low melting point no quality is less, when bear high temperature load, while the low melting point material softening, but mesh skeleton still can support the load, so the magnesia brick of refractoriness under load is high, average more than 1550 ℃.A little lower than magnesia brick refractoriness, and refractoriness under load is higher than magnesia brick is a significant characteristic of magnesia chrome brick.
4. Thermal expansion and thermal shock resistance
Magnesia chrome spinel of magnesia brick and magnesium ferrite content is much and linear expansion coefficient is small, at the same time, the porosity of magnesia chrome brick is larger than magnesia brick, so, heat dilatability of magnesia chrome brick is small.
Monticellite content in magnesia brick is few, is not easy to cause differential expansion stress. Magnesium ferrite solid soluble in magnesia chrome spinel, solubility temperature range is very wide, Magnesium ferrite into and precipitation, not make a big stress, therefore, magnesia chrome brick has good thermal shock stability, water-cooled frequency can be up to among 25 times.
5. The slag resistance
The most content of magnesia chrome spinel in magnesia brick is compound of magnesium oxide and chromium trioxide, and chromium trioxide is a typical neutral oxide, therefore, magnesia brick of alkaline and acidic slag has strong ability of resistance.
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According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 95 words with the pattern -E---L--E. That is, nine letter words with 2nd letter E and 6th letter L and 9th letter E. In alphabetical order, they are:
aeroplane
beastlike
bellylike
bengaline
benzoline
berrylike
cellulase
cellulite
cellulose
cephalate
deathlike
decollate
decollete
fencelike
fertilise
fertilize
feudalise
feudalize
feuillete
genialise
genialize
gentilise
gentilize
heathlike
heelplate
helicline
jellylike
jewellike
leechlike
legislate
lemonlike
lemurlike
medullate
mentalese
mescaline
messaline
metallike
metalline
metallise
metallize
methylase
methylate
methylene
mezcaline
nepheline
nephelite
pectolite
pendulate
penduline
peneplane
pentylene
percaline
percolate
periclase
pericline
perseline
petallike
petiolate
petiolule
petrolage
reanalyse
reanalyze
recyclate
reenslave
reexplore
reinflame
reinflate
remoulade
resinlike
reutilise
reutilize
reviolate
segholate
semiplume
sensillae
sepiolite
sequelise
sequelize
serialise
serialize
serpulite
serrulate
sewerlike
sexualise
sexualize
tesselate
tessellae
ventilate
verbalise
verbalize
vernalise
vernalize
vexillate
wedgelike
yeastlike
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Diamonds, Rubies, Emeralds, Opal, and Sapphires are some gemstones that come to mind when we think of jewels. At a quick glance I can count more than 130 gemstones in my reference book. Gemstones are broken down by the scientific community into 10 specific mineral classes. To keep this simple, we will use the common terms for gemstones of precious, semiprecious, organic, and exotic. The following list is not all-inclusive, but is a good start.
PRECIOUS gemstones are: diamond, sapphire, ruby, and emerald.
LIST OF SEMIPRECIOUS GEMSTONES (PARTIAL LIST):
Amber (Amber)
Amethyst (Quartz)
Ametrine (Quartz)
Apatite (Apatite)
Aquamarine (Beryl)
Agate (Chalcedony) (red-banded agate is shown under sard)
Alexandrite (Chrysoberyl)
Azurite
Benitoite (Benitoite)
Beryl (Beryl)
Bloodstone (Chalcedony)
Carnelian (Chalcedony)
Chalcedony
Chrome Diopside (Diopside)
Chrysoberyl (Chrysoberyl)
Chrysoprase (Chalcedony)
Chrysocolla
Citrine (Quartz)
Diamond (Diamond)
Emerald (Beryl)
Fluorite
Garnet (Almandine, Andratite, Grossularite, Pyrope, Spessartine, Uvarovite)
Heliodore (Beryl)
Heliotrope (Chalcedony)
Hematite
Hessonite (Grossularite)
Hiddenite (Spodumene)
Iolite (Cordierite)
Jade (Jadeite or Nephrite)
Jasper (Chalcedony)
Kunzite (Spodumene)
Kyanite
Labradorite
Lapis Lazuli (Lazurite)
Malachite (Malachite)
Moonstone (Albite, Microcline Feldspar, Orthoclase, Plagioclase)
Morganite (Beryl)
Onyx (Chalcedony)
Opal (Opal)
Pearl
Peridot (Olivine)
Quartz (Quartz)
Rhodochrosite (Rhodochrosite)
Rhodolite (Almandine-Pyrope Garnet)
Rock Crystal (Quartz)
Rose Quartz (Quartz)
Ruby (Corundum)
Sapphire (Corundum)
Sard (Chalcedony)
Sardonyx
Sinhalite (Sinhalite)
Sodalite (Sodalite)
Spinel (Spinel)
Sugilite (Sugilite)
Sunstone (Oligoclase Feldspar)
Tanzanite (Zoisite)
Titanite (Sphene)
Topaz (Topaz)
Tourmaline (Tourmaline)
Tsavorite (Grossularite)
Turquoise (Turquoise)
Zircon (Zircon)
ORGANIC GEMSTONES INCLUDE:
ORGANIC:
Amber
Copal (young amber 3-7 million years old)
Coral
Pearls
LESSER KNOWN SEMIPRECIOUS GEMSTONES:
(Not commonly known, but are becomingly increasingly more popular especially in custom designed jewelry.)
Amblygonite
Andalusite
Apatite
Axinite
Benitoite (Benitoite)
Beryllonite
Brazilianite
Cassitierite
Cerussite
Danburite
Diopside
Dioptase
Dumortierite
Enstatite
Epidote
Euclase
Hambergite
Hemimorphite (also called Calamine)
Idocrase
Kornerupine (also called Prismatine)
Kyanite
Lazulite
Petalite
Phenakite
Prehnite
Scapolite
Scheelite
Serpentine
Sinhalite (Sinhalite)
Smithsonite (also called Bomamite)
Sphalerite
Sphene (Titanite)
Stitchite
Ulexite
Variscite (also called Utahlite)
EXOTIC GEMSTONES:
(Called this for a number of reasons. Many of these are hard to fine and not available in large quantities, others are brittle or break easily and therefore are not suitable for jewelry. These gemstones are generally owned by collectors and do not make it to the marketplace.)
This list could be quite long, I have included only a few to give you an idea of some that are in this category.
Actinolite
Ametrine
Aragonite
Bixbite
Clinohumite
Diasphore
Dolomite
Hypersthene
Labradorite
Muscovite
Olioclase
Periclase
Phosphophyllite
Pietersite
Rutile
Willemite
Wulfenite
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