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MENEGHINITE (Lead Antimony Sulfide)

Subclass: Sulfosalts. Uses: Mineral specimens and as a very minor ore of lead. Specimens. Meneghinite is a rare mineral that generally forms interesting acicular crystals. Meneghinite is one of several lead antimony sulfides. The elements lead, antimony and sulfur have the capability of forming many different minerals.

Determination of antimony in rocks and sulphide ores by ...

If necessary, antimony is first separated from copper and lead by co-precipitation with hydrous ferric oxide from ammoniacal medium and by precipitation of lead as lead sulphate.

ROBINSONITE, A NEW LEAD ANTIMONY SULPHIDE* L. G. BBnny ...

ROBINSONITE, A NEW LEAD ANTIMONY SULPHIDE MT pycometer of 5-ml capacity, the specific gravity of the sample was de-termined and found to be 4.790. The "Insol in HCl" portion (l9Ja/o oI the sample) was then obtained and its specific gravity (2.762) measured in the same manner. The specific gravity of boulangerite,6.2, was taken from the literature.

(PDF) EFFECT OF LEAD NITRATE ON CYANIDATION OF

The high sulphide ore required a stronger, longer pre-leaching period (12 h) with greater amounts of lime (7.0 kg/t) and lead nitrate (600 g/t) than the low-sulphide ore. The ore with a low ...

Roasting Arsenic Antimony Ores - 911metallurgist

18-11-2016 Metallurgists recommend that ores consisting chiefly of sulphide of antimony should be mixed with twice their weight of silica, and roasted at a very low temperature. The sand prevents the charge from “balling.’’ Sulman prefers to mix the charge with carbon instead of sand.

EP0806487A1 - Extraction of antimony from sulfide ores by ...

The concentrate of sulfur antimony ore, leached with a solution of caustic alkali according to the known techniques dissolves, as sulfur salts as much Sb as possible, whilst the other heavy and...

Antimony Gold - Tri Star

Refractory gold is in the ground gold ore trapped in sulphide lattice structures that conventional processes are unable to unlock. The clean roasting antimony developed by Tri-Star sold to joint venture company, Strategic Precious Metals Processing LLC in 2015 has opened the treatment again of these world gold resources, estimated to be 30% to 50% of remaining gold in the ground.

Improved gold and silver extraction from a refractory ...

01-01-2011 The leaching behavior of antimony from the ore was evaluated during the alkaline sulphide leach tests performed under different conditions (Fig. 3, Fig. 4). At a fixed level of 2.05 mol/L Na 2 S, the dissolution of antimony was observed to increase with increasing the concentration of NaOH in the range of 1–3.75 mol/L (Fig. 3).

Determination of antimony in rocks and sulphide ores by ...

Determination of antimony in rocks and sulphide ores by flame and electrothermal atomic-absorption spectrometry. ... If necessary, antimony is first separated from copper and lead by co-precipitation with hydrous ferric oxide from ammoniacal medium and by precipitation of lead as lead sulphate.

damnonia.blue: The archaeology of antimony

18-05-2018 Geological background The principal ore of antimony is the sulphide stibnite (Sb2S3) although the antimony-lead sulphosalt (PB4FeSb6S14) has been worked in some mines. The antimony at the Louisa Mine, in Dumfries and Galloway, is associated with stratiform arsenopyrite-pyrite mineralisation in a Silurian greywacke sequence with similarities to that in the Clontibret area, County

(PDF) Effect of Lead Nitrate on Cyanidation of Antimonial ...

The Akoluk ore (Ordu / Turkey) having a complex mineralogical composition is an antimonial sulphide ore. The ore consists of predominantly quartz, illite/kaolinite group clay (52.2% SiO2) and barite (17.1% Ba), and to a less extent, sulphide minerals such as pyrite, sphalerite, zinkenite and stibnite.

Mineral Commodity Report 2 - Antimony

Antimony is obtained from low grade sulphide ores (5–25% Sb) by roasting the ore to form the oxide Sb 2 O 4, which is then reduced to the element by heating with carbon. Higher grade ores (25–40% Sb) are melted with scrap iron in a furnace. The iron combines with the sulphur to form a liquid layer of

Antimony Trisulfide 1345-04-6 - National Institutes of Health

Stibnite has a low melting point, and it can be extracted by melting if the ore contains 45-60% antimony and is free of lead and arsenic. This technique is called liquation. Sulfide ores with antimony contents between 5 and 25% are roasted to give volatile Sb. 2. O. 3. which is reduced directly to the metal. Low-grade and complex ores or ores in

Antimony: The Most Important Mineral You Never Heard Of

06-05-2021 These are crystals of the antimony ore stibnite (antimony sulphide). ... laser sighting, explosive formulations, hardened lead for bullets and shrapnel, ammunition primers, ...

EP0806487A1 - Extraction of antimony from sulfide ores

A hydrometallurgic and electrochemical process for processing sulfur antimony ores and residues is disclosed, the end products from which are electrolytic antimony and elemental sulfur. The concentrate of sulfur antimony ore, leached with a solution of caustic alkali according to the known techniques dissolves, as sulfur salts as much Sb as possible, whilst the other heavy and precious metals ...

Improved gold and silver extraction from a refractory ...

The pretreatment of an antimonial refractory gold and silver ore was investigated using alkaline sulphide leaching. The ore assayed 20 g/t Au and 220 g/t Ag and contained predominantly quartz/clay and barite, and to a lesser extent, sulphides such as pyrite, stibnite, sphalerite, zinkenite (Pb 9 Sb 22 S 42) and andorite (Sb 3 PbAgS 6).The latter mineral was identified to be the most important ...

List Antimony Minerals Group - 911metallurgist

27-09-2016 Tetrahedrite or Gray Copper Ore Part of the list of all Antimony Minerals Group is Cu2Sb8S7. — Color, grayish or grayish black; powder, grayish or grayish black, sometimes inclining to brown or reddish; luster, metallic; H = 3 to 4; G=4.4 to 5.1; no cleavage; composition, about 52% copper, and, in addition to the antimony and sulphur, sometimes mercury or silver, also zinc and iron;

Sulfide - Wikipedia

Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Solutions of sulfide salts are corrosive. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide. Hydrogen sulfide (H 2 S) and bisulfide (SH −) are the conjugate ...

damnonia.blue: The archaeology of antimony

(PDF) Effect of Lead Nitrate on Cyanidation of Antimonial ...

cyanidation of gold ores containing antimony

The Treatment of Antimonial Gold Ores. The only simple sulphide mineral of antimony of importance is stibnite, SbS3, containing 718% antimony when pure. It is lead

Mineral Commodity Report 2 - Antimony

VOLCANIC-ASSOCIATED MASSIVE SULFIDE DEPOSITS (MODELS

Other ore minerals are present in much lower abundances, but constitute important potential heavy metal sources. The most common accessory sulfide and sulfosalt minerals are those of the tennantite-tetrahedrite series, arsenopyrite, and various lead-antimony-bismuth sulfosalt minerals, particularly in deposits associated with felsic rock.

damnonia.blue: antimony

Geological background The principal ore of antimony is the sulphide stibnite (Sb2S3) although the antimony-lead sulphosalt (PB4FeSb6S14) has been worked in some mines. The antimony at the Louisa Mine, in Dumfries and Galloway, is associated with stratiform arsenopyrite-pyrite mineralisation in a Silurian greywacke sequence with similarities to that in the Clontibret area, County Monaghan ...

The Mineral Gallery - Sulfides Class

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

Antimony Recovery from End-of-Life Products and

08-02-2016 Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from its use as flame retardant in plastics, coatings, and

Lead and antimony flotation - okdgroup

Lead and antimony flotation Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Lead and antimony flotation, quarry, aggregate, and different kinds of minerals.

Antimony sulphide - definition of Antimony sulphide by

Antimony sulphide synonyms, Antimony sulphide pronunciation, Antimony sulphide translation, English dictionary definition of Antimony sulphide. n. A lead-gray mineral, Sb2S3, that is the chief source of antimony.

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