Nobody downloaded yet

Hannebachite- a rare and important Sulphite - Term Paper Example

Comments (0) Cite this document
Hannebachite is an important natural mineral. The composition of Hannebachite is CaSO3.H20.It is also known as calcium sulfite hemihydrates.It is one of the most stable forms of Calcium sulphate and basically is categorized in the sulphite group…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98% of users find it useful
Hannebachite- a rare and important Sulphite
Read TextPreview

Extract of sample "Hannebachite- a rare and important Sulphite"

Download file to see previous pages In fact Hannebachite among the two most important naturally occurring sulfites, the other being Orschallite (Ca3(SO3)2(SO4).12H2O). Hannebachite, Orschallite, scotlandite (PbSO3) and gravegliaite are rare sulphite minerals that come under the class of Sulphites. The name “hannebachite” has been derived from the place it was first discovered in Hannerbacherly, near Hannebach, West Germany. Sulfite groups have the generalized formula Am[SO3]pZq·xH2O and AmBn[SO3]pZq·xH2O, where A and B both are cations and Z represent anion. The most commonly occurring cations groups binding includes Na+, K+, Cu2+, Mg2+, Al3+, Ca2+, Pb2+, and Ba2+. The molecular arrangement of sulphite is such that the sulfur molecule is at the apex of the pyramid thereby making sulfites really unstable. This is the reason why sulphite minerals are rarely found in nature. Hannebachite is an important component of fixated scrubber sludge. The structure of Hannebachite has several applications and forms the basis of further investigation since the applications of the mineral are yet to be determined and hence immense scope of research lies in this area. Introduction Hannebachite received its IMA status in 1983 following which the first ever publication on it was produced by G.Hentschel, E.Tillmanns and W. Hofmeister in 1985; however, the first person to detect the presence of this mineral was P.Orschall who was also the discoverer of Orschallite mineral. He found these minerals in a place named Hannerbacherly in West Germany. In nature Hannebachite is mostly found along with another sulfite mineral called Orschallite. Other minerals found in the porous cavities of quaternary melilite nepheline leucitite are clinopyroxene, apatite and phillipsite COMPOSITION The mineral –hannebachite, gained importance owing to commercial research on sulfite rich scrubber materials. Studies have shown that sulfite rich scrubber material extracted from power plants were rich in Hannebachite crystallites (Malhotra,2010). In nature Hannebachite is found as sharp, almost clear crystalline structure. The composition of the mineral is SO2 49.60%,CaO 43.42%, H2O 6.98% which corresponds to its molecular formula (Anthony et al,2000).Sulfites in nature are highly unstable owing to the pyramidal structure where the sulfur is seen at the apex while the oxygen sits on the other corners of the arrangement; thereby these unstable products change into sulfates. However, CaSO4.0.5H2O can substitute into the CaSO3.0.5H2O structure up to a mole fraction of at least 0.12 (Jones et al., 1977). Structure of Hannebachite It is already known that the chemical composition of the mineral includes carbon, hydrogen sulfur and oxygen. The molecular weight is about 258.30gm. Hannebachite is orthorhombic. Its space group is Pbna (2m/2m/2m). Extensive studies have been done to determine the exact structure of the mineral. Powder diffraction was conducted to calculate the single crystal profile (figure 3). The optical class of the mineral was seen to be biaxial. It was recorded that a= 6.46A, b= 7.765A and c=10.650A which means that in the orthorhombic crystal system of hannebachite alpha=90°, beta= 90° and gamma=90°. The J-mol structure gives a clear interpretation of this structure (Figure:3). Spectroscopic studies conducted brought forward a clear idea of the bonding between the atoms present (Figure 1). The structure of hannebachite mineral was studied through Raman Spectroscopy by Frost and Keefe. The sample for hannebachite was supplied by Mineralogical Research Company who sourced in from the Hannebacher Ley volcano in Germany. The bands are observed at ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Hannebachite- a rare and important Sulphite Term Paper”, n.d.)
Retrieved from
(Hannebachite- a Rare and Important Sulphite Term Paper)
“Hannebachite- a Rare and Important Sulphite Term Paper”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Hannebachite- a rare and important Sulphite

Important Attributes in Entrepreneurship

...?Important Attributes in Entrepreneurship Pursuit of an entrepreneurial dream starts with a viable dream. Entrepreneurship begins with conceptualizing a new idea, drawing a business plan, and making decision concerning the legal structure. Additionally, basic tactics such as pursuing an international opportunity or starting a new business venture, and financing issues are also considered before one can embark on the entrepreneurship journey. Most people, who venture into entrepreneurship, prefer a new business rather than already existing business opportunities (Reuvid, 2008, p. 16). Some people begin with a desire to begin a business and then look for an idea while others start by having an exciting idea and then...
19 Pages(4750 words)Essay

Rare Earth Minerals

...Rare earth minerals Rare earth minerals include 17 elements that are located in the 6th and 7th periods of the periodic table. They are also elements of the 3rd group in the periodic table. They are vital raw materials in the manufacture of electronic gadgets such as iPods, laptops and mobile phones just to mention a few. Because of their scarcity in the environment and their vital use, this paper highlights the importance of these rare earth’s minerals to the United States and why it should create its own resources or mines. The discovery of “ytterbite”, a black mineral, in 1800 made the existence of the rare earth minerals known to the world. According...
4 Pages(1000 words)Essay

Tuberous Sclerosis A Rare Disease

...? Tuberous Sclerosis: A Rare Disease Tuberous Sclerosis: A Rare Disease Introduction The Tuberous Sclerosis has been identified to afflict approximately one in every 6,000 newborns and where about 25,000 to 40,000 individuals were diagnosed with this illness in the United States (National Institute of Neurological Disorders and Stroke, 2012). The origin of the disease was traced to a French physician named Bourneville to as far back as the 1880s (Howell, n.d.). The current essay hereby aims to further explore this rare illness through presenting its definition and by expounding on its causes, symptoms, genetic make-up, treatment and various researches made on the subject. Definition of Tuberous Sclerosis Tuberous Sclerosis is one... of the...
4 Pages(1000 words)Research Proposal

CDC: Rare Meningitis cases 10-3-12

... not cause the meningitis. Critical value=Z 0.95=-2.4 from the Z table -2.4 is bellow 1 therefore accept the null hypothesizes. In conclusion we can strongly rely on the findings based on the test made that the outbreak of meningitis which has sicken 26 people in five states has been caused by steroid back injection. It is also evidently seen by the manufacturing company issuing a recall if three lots of steroid. Reference CDC: Rare meningitis cases up to 26 . (2012, October 3). USA TODAY: Latest World and US News - . Retrieved October 6, 2012, from The data obtained indicates 26 people were affected by meningitis out of which four died. The...
3 Pages(750 words)Essay

China's Export Quotas on Rare Earth Elements:Should the World Worry

...? Rare Earth Elements in China China has an important determinant been at the center of discussion concerning its influencein the global economy. This means that major global economies are up in arms to compete with it for world economic superpower which is currently occupied by the United States of America. It is a common knowledge that the size of the economy relies on the volume of exports and imports of and the corresponding nature of such commodities. Rare minerals are some of the crucial resources that influence the economic structures of different countries and China is not an exceptional. The level of natural resource base is an important determinant of the ability of a given country to realize expansionary growth... and...
6 Pages(1500 words)Essay

Important paper:

... NIST Investigation on Collapse of WTC Building 7 The discussion around the official NIST investigation team on the WTC building 7 collapses shows their findings as emphasizing on the fact that the fires and plane crushes were the main cause for the collapse of the buildings. They continued further to explain that once the initiation of collapse had been initiated the global collapse of the structure was unavoidable. However, other analysts have deferred with this notion and they have categorically stated that the NIST investigation was incorrect since in their report there was no explanation on how the total collapse of the building occurred. As a response to the criticism NIST tried to provide a more technically advance... NIST...
3 Pages(750 words)Essay

Rare Genetic Disease

..."Rare Genetic Disease" E-Lab 03 March 2008 Rare Genetic Disease: A Review "Rare Genetic Disease," posted on March 03, 2008 at E-Lab, is a report on Hutchinson-Gilford Progeria Syndrome ("Progeria", or "HGPS") -- a rare, fatal genetic condition characterized by an appearance of accelerated aging in children. It highlights the idea that the adult stem cells maybe the key to understanding the cause of this disease. This inference is supported by examinations conducted by the National Cancer Institute (NCI) designed to identify the effects of progerin on gene expression in a laboratory model of HGPS. This article is also presented supposedly to 'provide new insights into the biological mechanisms of normal ageing.'1 The significance... ) at an...
3 Pages(750 words)Essay

Rare earth-Business Globalization Apparently, it is to achieve the above objectives that China has started to impose restrictions on its export quota. Chapter 1.3.2 Impacts and consequences on the world  The sudden and unexpected cuts in exports of rare earths announced by China has resulted in a crisis-like situation in the high-tech end industrial firms which were totally dependent on China for their supplies. Most of the rare earth consumer countries were taken unawares by this Chinese move. Japan, the world’s biggest importer of rare earths and largest producer of automobiles, is the worst affected country, since Japanese government does not seem to maintain rare earth...
7 Pages(1750 words)Research Paper

Important events

...Significant Historical Events Remembering the 65th anniversary of World War II brings to fore memoriesof atrocities of war, the torture, the death of love ones and the most important of all is struggle for one’s freedom. Anticipate that there will be A. Hitlers in the future who will grab power and will be ready to destroy life by spreading another kind of atrocities. The question to ask is has people learned from its past? Has the affected people moved on? Men must learn from its past and yearn for the day when all wars and dictators are stopped and incapacitated. The following are the significant events after World War II that may have influenced the global community: Significant Events Impact Worldwide 1) The...
1 Pages(250 words)Essay

Important place

... My House One place is dear to me, my house. I find a deep attachment to my house, this is the reason I have nick d it ‘the theater of my dreams’. It fits perfectly a rest place, a home, a king’s residence and this is the reason I have invested heavily in developing a house that outstands. Its spacious, well furnished, neatly arranged and creatively designed. When I am out, I cannot avoid thinking about my house, it is a wonderful place. After the day’s chores, what a perfect place to retire, it is cool and the tantalizing look makes it very admirable. I look forward getting back to my house. Are you interested in knowing more about this amazing place? I know you said yes, join me as we address the nitty-gritties of this wonderful...
4 Pages(1000 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Term Paper on topic Hannebachite- a rare and important Sulphite for FREE!

Contact Us