Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Gypsum shopping experience:
1. Compare - without doubt the biggest advantage that the Gypsum offers shoppers today is the ability to compare thousands of Gypsum at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Gypsum? Wrong! If the Gypsum is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Gypsum then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Gypsum? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Gypsum and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Gypsum wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Gypsum then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Gypsum site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Gypsum, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Gypsum, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
{{Infobox mineral| name = Gypsum| category = Mineral| boxwidth =| boxbgcolor = pink| image = desert-rose-big.jpg| caption = Desert rose (crystal), 10 cm long| formula = CaSO4·2H2O| molweight =| color = White to grey, pinkish-red| habit = Massive, flat. Elongated and generally prismatic crystals| system = Monoclinic 2/m| twinning = common {110}| cleavage = 2 good (66° and 114°)| fracture = Conchoidal, sometimes fibrous| mohs = 1.5-2| luster = Vitreous to silky or pearly| refractive = α=1.520, β=1.523, γ=1.530| opticalprop = 2V = 58° +| birefringence =| pleochroism = None| streak = White| gravity = 2.31 - 2.33| melt =| fusibility = 3| diagnostic =| solubility = hot, dilute HCl| diaphaneity = transparent to translucent| other =| var1 = Satin Spar | var1text = Pearly, fibrous masses| var2 = Selenite ] | var3text = Fine-grained, slightly colored-->
Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the
chemical formula CaSO4·2H2O.
Crystal varieties
Gypsum occurs in nature as flattened and often crystal twinning crystals and transparent cleavable masses called selenite. It may also occur silky and fibrous, in which case it is commonly called
satin spar. Finally it may also be granular or quite compact. In hand-sized samples, it can be anywhere from transparent to opaque. A very fine-grained white or lightly-tinted variety of gypsum is called alabaster, which is prized for ornamental work of various sorts. In arid areas, gypsum can occur in a flower-like form typically opaque with embedded sand grains called
desert rose (crystal). The most visually striking variety, however, is the giant crystals from
Naica Mine. Up to the size of 11m long, these megacrystals are among the largest crystals found in nature. A recent publication shows that these crystals are grown under very constant temperature such that large crystals can grow slowly but steadily without excessive nucleation.
Occurrence
Gypsum is a common mineral, with thick and extensive
evaporite beds in association with sedimentary rocks. The largest deposits known occur in
stratum from the Permian age. Gypsum is deposited in lake and sea water, as well as in hot springs, from
volcano vapors, and sulfate solutions in
Vein (geology).
Hydrothermal anhydrite in veins is commonly hydrated to gypsum by groundwater in near surface exposures. It is often associated with the minerals
halite and
sulfur.
The word gypsum is derived from the
aorist form of the
Greek language verb
μαγειρεύω, "to cook", referring to the burnt or calcined mineral. Because the gypsum from the
quarry of the Montmartre district of
Paris has long furnished burnt gypsum used for various purposes, this material has been called plaster of Paris. It is also used in foot creams, shampoos and many other hair products.
Because gypsum dissolves over time in water, gypsum is rarely found in the form of sand. However, the unique conditions of the White Sands National Monument in the US state of New Mexico have created a 710 km² (275 sq mile) expanse of white gypsum sand, enough to supply the construction industry with drywall for 1,000 years. Commercial exploitation of the area, strongly opposed by area residents, was permanently prevented in 1933 when president Herbert Hoover declared the gypsum dunes a protected national monument.
Commercial quantities of gypsum are found in Thailand,
Germany,
Italy, England, Ireland, in
British Columbia,
Manitoba, Ontario, Nova Scotia and Newfoundland and Labrador in Canada, and in New York, Michigan, Iowa, Kansas,
Oklahoma,
Arizona, New Mexico, Colorado, Utah and
Nevada in the United States. There is also a large mine located at
Plaster City, California in Imperial County. There are commercial quantities in East Kutai,
Kalimantan.
Vast crystals of gypsum, up to 10metres in length have been found in the "Cueva de los Crystales" in Naica, Chihuahua, Mexico.http://naica.laventa.it/naica-crystal-cave.en.html
Uses of Gypsum
1.
Drywall2. Plaster ingredient.
3.
Fertilizer and
soil conditioner. In the late eighteenth and early nineteenth century, Nova Scotia gypsum, often referred to as plaister, was a highly sought fertilizer for wheat fields in the United States.
4.
Plaster of Paris (surgical splints; casting moulds; modeling).
5. A tofu (soy bean curd) coagulant, making it ultimately a major source of dietary
calcium, especially in Asian cultures which traditionally use very few
dairy products.
6. Adding hardness to water used for brewing.
7. An ingredient in the popular snack food
Twinkie8.
Chalk#Traditional uses.
9. A component of Portland cement used to prevent flash setting of concrete.
References
- Klein, Cornelis and Cornelius S. Hurlbut, Jr., 1985, Manual of Mineralogy, John Wiley, 20th ed., pp. 352-353, ISBN 0-471-80580-7
- WebMineral data
- Mineral Data from Mindat
- Mineral Galleries- Gypsum
{{Infobox mineral| name = Gypsum| category = Mineral| boxwidth =| boxbgcolor = pink| image = desert-rose-big.jpg| caption = Desert rose (crystal), 10 cm long| formula = CaSO4·2H2O| molweight =| color = White to grey, pinkish-red| habit = Massive, flat. Elongated and generally prismatic crystals| system = Monoclinic 2/m| twinning = common {110}| cleavage = 2 good (66° and 114°)| fracture = Conchoidal, sometimes fibrous| mohs = 1.5-2| luster = Vitreous to silky or pearly| refractive = α=1.520, β=1.523, γ=1.530| opticalprop = 2V = 58° +| birefringence =| pleochroism = None| streak = White| gravity = 2.31 - 2.33| melt =| fusibility = 3| diagnostic =| solubility = hot, dilute HCl| diaphaneity = transparent to translucent| other =| var1 = Satin Spar | var1text = Pearly, fibrous masses| var2 =
Selenite ] | var3text = Fine-grained, slightly colored-->
Gypsum is a very soft
mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
Crystal varieties
Gypsum occurs in nature as flattened and often crystal twinning crystals and transparent cleavable masses called
selenite. It may also occur silky and fibrous, in which case it is commonly called
satin spar. Finally it may also be granular or quite compact. In hand-sized samples, it can be anywhere from transparent to opaque. A very fine-grained white or lightly-tinted variety of gypsum is called alabaster, which is prized for ornamental work of various sorts. In arid areas, gypsum can occur in a flower-like form typically opaque with embedded sand grains called
desert rose (crystal). The most visually striking variety, however, is the giant crystals from Naica Mine. Up to the size of 11m long, these megacrystals are among the largest crystals found in nature. A recent publication shows that these crystals are grown under very constant temperature such that large crystals can grow slowly but steadily without excessive nucleation.
Occurrence
Gypsum is a common mineral, with thick and extensive evaporite beds in association with
sedimentary rocks. The largest deposits known occur in
stratum from the
Permian age. Gypsum is deposited in lake and sea water, as well as in hot springs, from
volcano vapors, and sulfate solutions in
Vein (geology).
Hydrothermal anhydrite in veins is commonly hydrated to gypsum by groundwater in near surface exposures. It is often associated with the minerals halite and
sulfur.
The word gypsum is derived from the
aorist form of the Greek language verb
μαγειρεύω, "to cook", referring to the burnt or calcined mineral. Because the gypsum from the quarry of the Montmartre district of
Paris has long furnished burnt gypsum used for various purposes, this material has been called plaster of Paris. It is also used in foot creams, shampoos and many other hair products.
Because gypsum dissolves over time in water, gypsum is rarely found in the form of sand. However, the unique conditions of the White Sands National Monument in the US state of
New Mexico have created a 710 km² (275 sq mile) expanse of white gypsum sand, enough to supply the construction industry with drywall for 1,000 years. Commercial exploitation of the area, strongly opposed by area residents, was permanently prevented in 1933 when president
Herbert Hoover declared the gypsum dunes a protected national monument.
Commercial quantities of gypsum are found in
Thailand,
Germany, Italy,
England,
Ireland, in
British Columbia, Manitoba,
Ontario,
Nova Scotia and Newfoundland and Labrador in
Canada, and in
New York, Michigan, Iowa,
Kansas, Oklahoma,
Arizona,
New Mexico, Colorado, Utah and Nevada in the
United States. There is also a large mine located at Plaster City, California in Imperial County. There are commercial quantities in East Kutai,
Kalimantan.
Vast crystals of gypsum, up to 10metres in length have been found in the "Cueva de los Crystales" in Naica, Chihuahua, Mexico.http://naica.laventa.it/naica-crystal-cave.en.html
Uses of Gypsum
1.
Drywall2.
Plaster ingredient.
3. Fertilizer and soil conditioner. In the late eighteenth and early nineteenth century, Nova Scotia gypsum, often referred to as plaister, was a highly sought fertilizer for wheat fields in the United States.
4. Plaster of Paris (surgical splints; casting moulds; modeling).
5. A tofu (soy bean curd) coagulant, making it ultimately a major source of dietary calcium, especially in
Asian cultures which traditionally use very few
dairy products.
6. Adding hardness to water used for brewing.
7. An ingredient in the popular snack food
Twinkie8.
Chalk#Traditional uses.
9. A component of
Portland cement used to prevent flash setting of concrete.
References
- Klein, Cornelis and Cornelius S. Hurlbut, Jr., 1985, Manual of Mineralogy, John Wiley, 20th ed., pp. 352-353, ISBN 0-471-80580-7
- WebMineral data
- Mineral Data from Mindat
- Mineral Galleries- Gypsum
British Gypsum - Redirect
Please note that all references to this site should now be re-directed to www.british-gypsum.com . This is now the only web address used for the British Gypsum web site.
British Gypsum - Plaster, Plasterboard and Drylining Systems
British Gypsum - Plaster, Plasterboard, Drylining Systems, acoustic ceiling titles ... Systems. System Selector - select your required British Gypsum system by system name | by ...
Literature
Literature ... View the British Gypsum White Book Get email updates from British Gypsum
Gypsum - Wikipedia, the free encyclopedia
Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula Ca S O 4 ·2 H 2 O.
IMA Europe - Industrial Minerals Association
Gypsum. Gypsum comes from the Greek word gypsos and has three different variations: gypsum, alabaster (fine-grained gypsum that has been used for centuries for sculpture) and ...
Gypsum Association - Home
Represents manufacturers of gypsum board in the U.S. and Canada and provides technical information and assistance to the construction industry and code enforcement community ...
Definition: gypsum from Online Medical Dictionary
The Online Medical Dictionary is a searchable dictionary of definitions from medicine, science and technology.
Welcome - Gypsum New Zealand
Gypsum improves the structure of clay soils. Gypsum is an excellent soil conditioner and a natural mineral source of calcium and sulphur.
Gypsum Products Development Association.(GPDA)
Fireworks Splice HTML ... The role of the Gypsum Products Development Association (GPDA) is to develop and encourage the understanding of gypsum based building ...
Gypsum Mining in Cumbria
The history of Gypsum and Anhydrite Mining in Cumbria. ... Gypsum (hydrated calcium sulphate) has been quarried or mined at Kirkby Thore for over 200 years.
