pyrolusite

Pyrolusite and romanechite are among the most common manganese minerals.

It is found naturally as the mineral pyrolusite.

Akhtenskite is a polymorph of much more widespread pyrolusite.

As an ore of manganese it is much less abundant than pyrolusite or psilomelane.

Natural pyrolusite has been used in batteries, but high-quality batteries requires synthetic products.

The mineral pyrolusite makes a poor reagent.

Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc.

This feminine magnes was later called magnesia, known now in modern times as pyrolusite or manganese dioxide.

Specific mineral varieties include pyrolusite, lithiophorite, nsutite, takanelite and vernadite.

Often associated with pyrolusite, braunite, hausmannite and goethite.

The most important manganese ore is pyrolusite (MnO).

It is a common and important ore of manganese, occurring under the same conditions and having the same commercial applications as pyrolusite.

Manganese occurs as replacement bodies of pyrolusite and rhodochrosite in limestone adjacent to the fracture zones.

Potassium permanganate is produced industrially from manganese dioxide, which also occurs as the mineral pyrolusite.

It is associated with hematite, barite, pyrolusite, quartz and other manganese oxide minerals.

The todorokite has been altered near the surface and along faults or fissures to pyrolusite, and perhaps to manganite.

Other minerals from the sedimentary rocks include pyrite, calcite, barite, manganite, and pyrolusite.

Scheele and others were aware that pyrolusite (now known to be manganese dioxide) contained a new element, but they were not able to isolate it.

It occurs in association with pyrolusite, nsutite, braunite, chalcophanite, manganite and various other manganese oxides.

When he treated the pyrolusite with hydrochloric acid over a warm sand bath, a yellow-green gas with a strong odor was produced.

Typical associated minerals include hausmannite, galaxite, braunite, pyrolusite, coronadite, hematite and magnetite.

Commonly associated minerals are pyrolusite, cryptomelane, manganite, psilomelane, quartz, feldspar and calcite.

Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name).

By the mid-18th century, Swedish chemist Carl Wilhelm Scheele had used pyrolusite to produce chlorine.

Some minerals that are commonly associated with Akhtenskite are: todorokite, pyrolusite, nsutite, goethite, and cryptomelane.