Nabesite: Properties and Occurrences
Nabesite is a rare silicate mineral of the zeolite group with the chemical formula Na2BeSi4O10·4(H2O). It is an orthorhombic-disphenoidal mineral containing beryllium, hydrogen, oxygen, silicon,…
Geographic Minerals
Rose quartz – a type of quartz
Rose quartz is a type of quartz that exhibits a pale pink to rose red hue. A pink variety of quartz, that ranges from very…
Nabalamprophyllite: Properties and Occurrences
Nabalamprophyllite has a general formula of Ba(Na,Ba){Na3Ti[Ti2O2Si4O14](OH,F)2}. It is a monoclinic-prismatic mineral containing aluminum, barium, calcium, fluorine, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, sodium,…
Morganite: Properties and Occurrences
Morganite is the pink to orange-pink variety of beryl, a mineral that includes emerald and aquamarine. It is also known as “pink beryl”, “rose beryl”,…
Menilite: Properties and Occurrences
Menilite is an impure opal in brown or dull grayish concretions. It is sometimes considered a variety of opal but probably impure and really just…
Andradite: Properties and Occurrences
Andradite is a species of the garnet group. The term Garnet describes a group name for several closely related minerals that form important gemstones, and…
Milky quartz – a common variety of crystalline quartz
Milky Quartz is any quartz crystal or cluster that is white in color and cloudy. It is the most common variety of crystalline quartz. The…
Psilomelane (Formula, Occurrence)
A collective name for hard black manganese oxides, including hollandite and romanechite, is Psilomelane, Barium, and manganese hydrous oxide, BaMnMn8O16(OH)4. It is an important manganese…
Geyserite: Properties and Occurrences
Geyserite is a hard opaline siliceous deposit occurring around geysers and hot springs. It is a form of opaline silica that is often found around…
Mariposite: Properties and Occurrences
Mariposite is a chromium-rich variety of Phengite which is a discredited name for a mineral series between Muscovite and Celadonite. It is a mineral that…
Muscovite: Properties and Occurrences
Muscovite is the most common mineral of the mica family. It is also known as common mica, isinglass, or potash mica is a hydrated phyllosilicate…
Magnesiocummingtonite: Properties and Occurrences
Magnesiocummingtonite is a common component of some regional metamorphic rocks. It is the magnesium-rich endmember of the cummingtonite-grunerite series of the amphibole group of minerals,…
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