Crystal Radio--Stignite & Shungite As Detectors? (4K)

From Wikipedia ==============
Shungite is either a diverse group of metamorphosed Precambrian rocks all of which contain pyrobitumen, or the pyrobitumen within those rocks.Shungite is most widely known for pseudoscientific and quack medical claims about its uses in medicine and technology, where it is claimed to have properties ranging from nebulous health benefits to blocking 5G radiation.
Occurrence
Shungite has mainly been found in Russia. Other occurrences have been described from Austria, India, Democratic Republic of Congo and Kazakhstan.
Terminology
The term "shungite" has evolved substantially since was originally used in 1879 to describe a black substance ... found in veins near its type locality of Shunga. In scientific usage, shungite refers to a mineraloid which contains greater than 98% carbon, and is used as a modifier to the host-rock's name, i.e. "shungite-bearing dolostone".
Formation and structure
Shungite had historically been regarded as an example of abiogenic petroleum formation, but its biological origin has now been confirmed. Shungite-bearing deposits that retain sedimentary structures are interpreted as metamorphosed oil source rocks.
Shunga deposit
The Shunga deposit contains an estimated total carbon reserve of more than 250 gigatonnes. It is found within a sequence of Palaeoproterozoic meta-sedimentary and meta-volcanic rocks that are preserved in a synform.
Uses and pseudoscientific claims
Shungite has been used since the middle of the 18th century as a pigment for paint, and is currently sold under the names "carbon black" or "shungite natural black". The presence of fullerenes has resulted in shungite being of interest to researchers as a natural reservoir.
Shungite has been used as a folk medical treatment since the early 18th century. Peter the Great set up Russia's first spa in Karelia to make use of the purported water purifying properties of shungite. Despite its purported health benefits, shungite contains toxic heavy metals such as lead and cadmium and can pose a health risk when used as an alternative medicine.
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Stibnite, sometimes called antimonite, is a sulfide mineral with the formula Sb2S3. This soft grey material crystallizes in an orthorhombic space group. It is the most important source for the metalloid antimony. The name is derived from the Greek στίβι stibi through the Latin stibium as the former name for the mineral and the element antimony.
Structure
Stibnite has a structure similar to that of arsenic trisulfide, As2S3. The Sb(III) centers, which are pyramidal and three-coordinate, are linked via bent two-coordinate sulfide ions. However, some studies suggest that the actual coordination polyhedra of antimony are SbS7, with (3+4) coordination at the M1 site and (5+2) at the M2 site. Some of the secondary bonds impart cohesion and are connected with packing. Stibnite is grey when fresh, but can turn superficially black due to oxidation in air.
Properties
The melting point of Sb2S3 is 823 K (550 °C; 1,022 °F). The band gap is 1.88 eV at room temperature and it is a photoconductor. Stibnite is also toxic upon ingestion, with symptoms similar to those of arsenic poisoning.