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2. Alunite - Wikipedia

   en.wikipedia.org/wiki/Alunite

   Alunite crystals morphologically are rhombohedra with interfacial angles of 90° 50', causing them to resemble cubes. Crystal symmetry is trigonal. Minute glistening crystals have also been found loose in cavities in altered rhyolite. Alunite varies in color from white to yellow gray.

3. Ammonium iron(III) sulfate - Wikipedia

   en.wikipedia.org/wiki/Ammonium_iron(III)_sulfate

   Ammonium iron(III) sulfate, NH 4 Fe(SO 4) 2 ·12 H 2 O, or NH 4 [Fe(H 2 O) 6](SO 4) 2 ·6 H 2 O, also known as ferric ammonium sulfate (FAS) or iron alum, is a double salt in the class of alums, which consists of compounds with the general formula AB(SO 4) 2 · 12 H 2 O. [2] It has the appearance of weakly violet, octahedrical crystals.

4. Hemorrhoidal artery embolization - Wikipedia

   en.wikipedia.org/wiki/Hemorrhoidal_artery_emboli...

   Hemorrhoidal artery embolization (HAE, or hemorrhoid artery embolization) is a non-surgical treatment of internal hemorrhoids. [ 1 ] The procedure involves blocking the abnormal blood flow to the rectal (hemorrhoidal) arteries using microcoils and/or microparticles to decrease the size of the hemorrhoids and improve hemorrhoid related symptoms ...

5. How to Get Rid of Hemorrhoids at Home—Plus When to ... - AOL

   www.aol.com/lifestyle/rid-painful-hemorrhoids...

   External hemorrhoids occur when hemorrhoids are pushed just outside of the anal opening. When this happens, they can swell up, bleed, and feel seriously painful, irritated, and itchy, notes Dr ...

6. Ammonium alum - Wikipedia

   en.wikipedia.org/wiki/Ammonium_alum

   Ammonium aluminium sulfate, also known as ammonium alum or just alum (though there are many different substances also called "alum"), is a white crystalline double sulfate usually encountered as the dodecahydrate, formula (NH 4)Al(SO 4) 2 ·12H 2 O. It is used in small amounts in a variety of niche applications.

7. Alum - Wikipedia

   en.wikipedia.org/wiki/Alum

   Crystal of potassium alum, KAl(SO 4) 2 ·12H 2 O. An alum (/ ˈ æ l ə m /) is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula X Al(SO 4) 2 ·12 H 2 O, such that X is a monovalent cation such as potassium or ammonium. [1] By itself, "alum" often refers to potassium alum, with the ...