#manganite

[vugnasmineralblog]

Rhodochrosite & Manganite | NChwaning I Mine, Kuruman, Kalahari, Northern Cape Province, South Africa

[mineralsandsomerocks]

Manganite with Todorokite on matrix

Locality: Hotazel, Kalahari, Northern Cape Province, South Africa

[plantsrocksthings]

Rhodochrosite on Manganite matrix, from South Africa.

[earthstory]

Manganite on Ettringite

Rare and fragile, these beautiful hexagonal crystals in the photo comes from the only source of this gemmy yellow sulphate mineral: The N'Chwaning Mines in South Africa's Kalahari manganese fields. Elsewhere it occurs as microcrystals, usually white to colourless. The mineral needs careful storage, since it is hydrated, and as water evaporates from the structure the colour turns white. It was first discovered in the Eifel Volcanic Field in Germany (see http://on.fb.me/1nJ2QtO), named in 1874 for the Ettringer volcano that spouted the lava flows which are its type locality. It forms when volcanic rocks intrude into limestones and freeze, baking the surrounding rock into a contact metamorphic aureole and spitting out element laced juices as they slowly freeze. This produces an exotic chemistry as the distillations of crust or mantle encounter limey rocks, forming a mineralogy known as skarns. Here the yellow Ettringite on matrix is accompanied by a lovely octahedron of Manganite, the most common oxide of this element.

Loz

Image credit : Keys Minerals

http://www.mindat.org/min-1414.html http://bit.ly/1JTX0j9

[hematitehearts]

Rhodochrosite on Manganite Matrix

Size: 5 cm by 6.5 cm by 5 cm

Locality: N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa.

[bijoux-et-mineraux]

Quartz with Manganite inclusions on Kutnohorite - N’Chwaning II Mine, Kuruman, North Cape Province, South Africa

[phenomenalgems]

Some of my favorite specimens seen at the Tucson Gem Shows! 🐢🐊 💕✨ #fossils #seaturtle #alligator #greenriverformation #fluorite #quartz #rhodochrosite #rainbow #manganite #greentourmaline #phantom #rocksandminerals #mineralspecimen #crystals #nature #tucsongemshows #gemshow #gemporn #phenomenalgems #onlocation

[cat-noises]

Drawing some of my gemsonas in a fun and cute fashion :>

In order, we have:

Manganite (Rose of Sharon) Morenci Cuprite (Cherry Blossom) Danburite (Crepe Myrtle) Tenorite (Pear Blossom) Utah Agate (Plum Blossom)

I might make more of these at at later time, too!

Enjoy~!